look up any word, like fleek:
 
1.
Fabulous, perfect, over the top amazing.
Those 8" gaga platform heels are bismo!
by werk November 19, 2010
 
2.
A shot consisting of 1.5 oz Peppermint Schnapps and 1.5 oz Pepto-Bismol. The tastiest variety is made with cherry flavored Pepto-Bismol.
Usually used before a night of extremely heavily drinking to prevent irregular bowel movements.
"Hey do you wanna go drink cosmos and watch sex and the city?"
"Fuck no, I'm gonna go drink some bismos."
by Urban Dictionary September 05, 2011
 
3.
Large puft up object
Ya mums a bismo
by Sven the adventurer March 27, 2003