look up any word, like thot:
 
2.
old saggy flat man tits
OHH man did you see that guy's fish tits they were AWESOME!!!!!!
by The Triangle October 26, 2007
 
1.
Girls who does not have breasts
Girls boyfriend - Why do you call her fishtits?

Legend - Fish dont have tits
by Sir Fist August 11, 2010
 
3.
Substitute for the word shit when frustrated or shocked
1) Holly Fish Tits!!!
2) Aw Fhish Tits.
by G Man April 18, 2005
 
4.
A phrase which can be used just about anywhere.

Also, the tits of a fish.
"How are you today fucking?"
"FISH TITS"

"Did you write that paper yet?"
"Yea, I did it fish tits ago."
by Meats April 11, 2007
 
5.
To have very very very smelly nipples. Particularly smelling of rotten salmon or shrimp.
"Man, that kid Freddy just walked in. He must have fishtits!"
by Dr. Martin P. Haggis September 20, 2008