“Taco Tuesday” is when an eating establishment serves tacos on Tuesday—usually at a reduced price. “Taco Tuesday” has been cited in print since at least 1971. Taco John’s trademarked “Taco Tuesday” with a first use date of 1979.
 
“Live every day like it’s Taco Tuesday,” “Unexpected side effect of Taco Tuesday? Wet Fart Wednesday” and “What came first, the taco or the Tuesday?” are a related sayings.
 
Other slang names for days of the week include Shunday, Sober Sunday, Margarita Monday, Messed-up Monday, Mojito Monday, Moonshine Monday, Boozeday Tuesday, Tanked Tuesday, Tasty Tuesday, Tequila Tuesday, Tipsy Tuesday, Trashed Tuesday, Twisted Tuesday, Wasted Wednesday, Whiskey Wednesday, Wiener Wednesday, Wine Wednesday, Winesday Wednesday, Wing Wednesday, Thirsday, Thirstday, Thirsty Thursday, Fajita Friday, Fucked-up Friday, Shit-faced Saturday, Sloppy Saturday, Sloshed Saturday and Smashed Saturday.
     
   
Newspapers.com
13 April 1965, Minneapolis (MN) Tribune, pg. 24, col. 4 ad:
TACOS
TUESDAY SPECIAL
La Cucharacha
   
Newspapers.com
4 May 1965, Clovis (NM) News-Journal, pg. 14, col. 8 ad:
DOG ‘n’ SUDS
TACOS
EVERY
TUESDAY
5 P. M. to 11 P. M.
ONLY
3 for 75c

Newspapers.com
5 April 1971, Spokane (WA) Daily Chronicle, pg. 5, col. 6 ad:
TACO TUESDAY
SPECIAL every TUESDAY
TACOS & BURRITOS
REG. 35c EA.
29c
BURGER KING DRIVE IN
   
24 October 1972, Hartford (CT) Courant, pg. 11, col. 7 ad:
Today is
TACO
TUESDAY
at
El Charro
DE MEXICO
 
Newspapers.com
5 November 1973, The News-Messenger (Fremont, OH), pg. 28, col. 6 ad:
EVERY TUESDAY IS TACO DAY
LaHacienda Restaurant
 
Newspapers.com
13 January 1974, Plano (TX) Daily Star-Courier, sec. 1, pg. 6, col. 1 ad:
Taco Tuesday
(Dos Amigos.—ed.)
 
9 December 1974, Reno (NV) Evening Gazette, pg. 21, col. 5 ad:
TACO TUESDAYS
BUY ONE, GET TWO
TACOS
(Big Deal Family Restaurants and A&W Restaurants—ed.)
 
20 February 1981, Seattle (WA) Times, Tempo, pg. 10, col. 4 ad:
Taco Tuesday—$1 Tacos in the lounge every Tuesday
(Conquistador—ed.)
   
Google Books
San Diegan
(16th annual edition)
By Barry M. Berndes
San Diego, CA: San Diegan
1984
Pg. 100:
Old Town Mexican Cafe and Cantina
(...)
And their popular Taco Tuesdays run all day long.
 
3 March 1988, Oshkosh (WI) Advance-Titan, pg. 4, col. 1 ad:
TACO JOHN’S
HOME OF TACO TUESDAY
   
OCLC WorldCat record
Tacos on the tundra : the story of Barrow, Alaska’s long-time resident, Fran Tate
Author: Lyn Kidder
Publisher: Anchorage, AK : Bonaparte Books, ©1996.
Edition/Format:   Book : Biography : English : 1st ed
Contents:
Taco Tuesday
 
New York (NY) Times
Long Beach Renaissance Has a Tasty Flavor to It
By RICHARD J. SCHOLEM
Published: May 20, 2001
(...)
Midway between the celebratory, special occasion restaurants and the down and dirty ones is the Baja California Grill. At first glance and at second, as well, this Mexican cantina looks like a funky bar scene spot for 20 somethings. Signs proclaim taco Tuesday (any taco at the bar $1), wild wing Wednesday and absolutely no alcoholic beverages permitted on the street.
 
OCLC WorldCat record
Stuart Little, the animated series. / Ep. 106, Life, liberty, and the pursuit of taco Tuesday
Publisher: [United States] : Sony/ATV, [2003]
Edition/Format:   Music CD : CD audio : No Linguistic Content
 
Urban Dictionary
Taco Tuesday
The best thing that Tuesday’s have to offer after 3PM.
3 tacos for $0.99 at Del Taco!
(...)
by Photik May 1, 2006
 
OCLC WorldCat record
Come with me to Taco Tuesday : essays and appeals
Author: Richard Hackler; Paul Lehmberg; Daniel A Gocella; Gabriel Brahm; Northern Michigan University. Dept. of English.
Dissertation: Thesis (M.F.A.)—Northern Michigan University, 2012.
Edition/Format:   Thesis/dissertation : Thesis/dissertation : Fiction : Microfiche : English
Summary:
Come with Me to Taco Tuesday is a collection of short creative nonfiction that (loosely) charts the past eight years of my life living near Lake Superior. The essays vary in style, structure, and tone, and, when read together, chart my development from adolescence (small concerns, exuberance) to adulthood (larger concerns, a more restrained exuberance). The collection should also be read as a love letter to the Lake Superior Region’s landscape and people.
 
This Mom’s Got Something to Say
T is for Taco Tuesday
August 22, 2012
Taco Tuesday. It’s a big deal at our house.
(...)
Sub Sunday ~ Make your own Sub night. All the fixin’s and they make one for lunch the next day. Score.
Meatball Monday ~  Sweet & Sour Meatballs and Rice. No variation allowed.
Taco Tuesday ~  The meal that started it all.
Wing Wednesday ~  This just mostly means anything with chicken in it.
Take-Out Thursday~ I can’t cook all the time and it kind of has us stumped. What’s another “T” meal??
French Fries Friday – We have a kinda sorta mix of things but there is always french fries.
Thankfully, we get a break on Saturday, or we get the option anyways. But we usually have pizza.
 
Twitter
Jordan :D
@iamkoreann
Monday Madness, Taco Tuesday, Wing Wednesday, Thirsty Thursday, Fried Friday, Sweet Saturday, Savory Sunday. @itzabella_matuk
9:04 AM - 30 Nov 12
 
(Trademark)
Word Mark TACO TUESDAY
Goods and Services IC 042. US 100. G & S: RESTAURANT SERVICES. FIRST USE: 19790000. FIRST USE IN COMMERCE: 19790000
Mark Drawing Code (1) TYPED DRAWING
Serial Number 73788518
Filing Date March 23, 1989
Current Basis 1A
Original Filing Basis 1A
Published for Opposition September 26, 1989
Change In Registration CHANGE IN REGISTRATION HAS OCCURRED
Registration Number 1572589
Registration Date December 19, 1989
Owner (REGISTRANT) TACO JOHN’S SEASONINGS LIMITED PARTNERSHIP COMPOSED OF HAROLD W. HOLMES AND J.F. WOODSEN, BOTH ARE UNITED STATES CITIZENS LIMITED PARTNERSHIP WYOMING 808 WEST 20TH STREET P.O. Box 1589 CHEYENNE WYOMING 820031589
Attorney of Record THOMAS S. BIRNEY
Disclaimer NO CLAIM IS MADE TO THE EXCLUSIVE RIGHT TO USE “TACO” APART FROM THE MARK AS SHOWN
Type of Mark SERVICE MARK
Register PRINCIPAL
Affidavit Text SECT 8 (6-YR). SECTION 8(10-YR) 20090211.
Renewal 2ND RENEWAL 20090211
Other Data REGISTRATION IS RESTRICTED TO THE AREA COMPRISING THE ENTIRE UNITED STATES, EXCEPT FOR THE STATE OF NEW JERSEY. CONCURRENT USE PROCEEDING NO. 972 WITH SERIAL NO. 73/816,022.
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(Trademark)
Word Mark TACO TUESDAY
Goods and Services IC 043. US 100 101. G & S: Restaurant services. FIRST USE: 19790206. FIRST USE IN COMMERCE: 19790206
Standard Characters Claimed
Mark Drawing Code (4) STANDARD CHARACTER MARK
Serial Number 77124322
Filing Date March 7, 2007
Current Basis 1A
Original Filing Basis 1A
Published for Opposition May 27, 2008
Registration Number 3621366
Registration Date May 19, 2009
Owner (REGISTRANT) GREGORY HOTEL, INC. AKA THE NEW GREGORY’S CORPORATION CORPORATION NEW JERSEY 900 SHORE ROAD SOMERS POINT NEW JERSEY 08244
Attorney of Record RICHARD L MORRIS JR ESQ
Disclaimer NO CLAIM IS MADE TO THE EXCLUSIVE RIGHT TO USE “TACO” APART FROM THE MARK AS SHOWN
Type of Mark SERVICE MARK
Register PRINCIPAL
Other Data Registration limited to the area comprising the State of New Jersey. Pursuant to concurrent use proceeding no. 94000972. Concurrent registration with Registration No. 1572589.
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