A popular—and obvious—bobsleighing joke is:
 
“I went bobsleighing the other day. Killed/Slayed/Sleighed 20 Bobs.”
   
The number of “Bobs” (or “bobs”) has varied. “I used to go bobsleighing. My record was twenty Bobs slayed on one trip” was posted to the newsgroup alt.fan.team-rocket on February 28, 2002. “#badjokefriday i went bobsleighing last night. killed 25 bobs” was posted on Twitter on March 27, 2009.
 
The joke has been printed on several images.
   
     
Wikipedia: Bobsleigh
Bobsleigh or bobsled is a winter sport in which teams of two or four teammates make timed runs down narrow, twisting, banked, iced tracks in a gravity-powered sled. The timed runs are combined to calculate the final score.
 
The various types of sleds came several years before the first tracks were built in St. Moritz, Switzerland, where the original bobsleds were adapted upsized luge/skeleton sleds designed by the adventurously wealthy to carry passengers. All three types were adapted from boys’ delivery sleds and toboggans.
 
Competition naturally followed, and to protect the working class and rich visitors in the streets and byways of St Moritz, bobsledding was eventually banned from the public highway. In the winter of 1903/1904 the Badrutt family, owners of the historic Kulm Hotel and the Palace Hotel, allowed Emil Thoma to organise the construction of the first familiarly configured ‘half-pipe’ track in the Kulm Hotel Park, ending in the village of Cresta. It has hosted the sport during two Olympics and is still in use today.
         
Google Groups: alt.fan.team-rocket
Jaymz and Digi spouting verbal diarrhoea!
James Wilson
2/28/02
(...)
Really? I used to go bobsleighing. My record was twenty Bobs slayed on one trip.
     
The Republik of Mancunia
Stand-up jokes
Carlito’s Way
May 12, 2007 at 7:46am
Can’t remember who said these but:
 
“I went bobsleighing the other day. Killed twenty bobs.”
 
Twitter
bluescreenkid‏
@bluescreenkid
#badjokefriday i went bobsleighing last night. killed 25 bobs.
5:28 AM - 27 Mar 2009
     
North Stand Chat
classic Tommy Cooper gags
Jesus Gul
30-09-2009, 12:47
I’ve just been Bobsleighing….I sleighed twenty bobs (not actually TC’s)
 
Google Groups: FatBoysinPortugal
Lest we forget ...
.(JavaScript must be enabled to view this email address)
5/24/11
(...)
I’ve been bobsleighing…I’ve sleighed twenty Bobs
 
Twitter
phil cross‏
@philcross78
Replying to @keithchegwin
@thekeithchegwin I went bobsleighing last week. Slayed 20 bobs
1:19 AM - 13 Jul 2011
 
Google Books
The Everything Big Book of Jokes:
Hundreds of the Shortest, Longest, Silliest, Smartest, Most Hilarious Jokes You’ve Never Heard!
By Evan C. Thomas
Avon, MA: Adams Media
2014
Pg. 225:
DID YOU HEAR ABOUT THE man who received a life sentence just for one day of bobsleighing? He killed twenty Bobs in one day.
 
Google Books
The Best Joke Book (Period):
Hundreds of the Funniest, Silliest, Most Ridiculous Jokes Ever
By William Donohue
Avon, MA: Adams Media
2014
Pg. 191:
Did you hear about the man who received a life sentence just for one day of bobsleighing? He killed twenty Bobs in one day.
   
Reddit—Jokes
I went bobsleighing the other day
submitted March 14, 2017 by breadman666
Killed 250 bobs
 
Reddit—Dad Jokes
I went bobsleighing the other day… (self.dadjokes)
submitted August 2, 2017 by GladstoneBrookes
Killed 250 bobs.
 
Twitter
LaffGaff‏
@LaffGaff
I went bobsleighing the other day.
Killed 11 Bobs.
#funny #jokes #jokeoftheday
4:12 PM - 22 Sep 2017