“Kurt ‘n’ Rod” is an appropriate name (aptronym) for “curtain rod.” “Kurt N Rod” was the name of a horse in 1966.
 
A riddle version was posted on the newsgroup rec.humor on April 23, 1993:
 
Q: What do you call two male quads hanging around a window?
A: Kurt ‘n Rod.
 
“I went fishing today with my two friends, Rod and Annette” is a one-liner with two similar apt names.
 
           
Google Books
Year Book, Trotting and Pacing
United States Trotting Association
Volume 79, Issue 2
1966    
Pg. 1332:
64 Kurt N Rod (55), p$0, br m, by James R. Rodney. Chester R. Moffitt, Vernon Center, N. Y.
   
Google Books
November 1985, Boys’ Life, “Think & Grin,” pg. 73, col. 3:
A book never written: “All About Window Coverings” by Kurt N. Rod.— Brian Duncan, Tallahassee, Fla.
 
16 December 1988, Rockford (IL) Register Star, “Isaac Asimov’s Super Quiz,” pg. 9D, col. 5:
Two men putting up kitchen curtains.
Kurt ‘n’ Rod.
 
Google Groups: rec.humor
Canonical List of Quad Jokes
.(JavaScript must be enabled to view this email address)
4/23/93
(...) 
What do you call two male quads hanging around a window?
Kurt ‘n Rod.
 
Google Groups: alt.humor.puns
A pretty bad joke.
Tal
3/21/96
(...)
Two guys with no arms/ legs hanging on the wall..
-Kurt ‘n Rod
 
Twitter
Fuddy‏
@HalfBadIQ
What do you call two guys hanging from a window? Kurt n Rod. #worstjokeever
1:33 AM - 27 Aug 2009
   
A Way with Words
Kurt and Rod
Posted by Grant Barrett on December 8, 2012
A while back, our Quiz Guy John Chaneski gave us a game of aptronyms, and your answers are still pouring in. Like, what do you call two guys over a window? How about Kurt n’ Rod?
   
Google Books
101 Amazing What Do You Call Jokes
By Jack Goldstein
Andrews UK Limited
2013
Pg. ?:
What do you call two men in the window?
Kurt ‘n’ Rod
 
Reddit—Jokes
What do you call two men hanging from a window?
submitted November 21, 2017 by Maxladd
Kurt n Rod