yokester 

A sarcastic and condescending way of calling somebody unfunny.
Also commonly used after someone says "lol" when their joke is clearly not funny at all.

John: I went to the store today.
Corinne: coolbeans!
John: Whatta yokester...

yokester by Matthew G July 30, 2008

Yukester

A nickname for a person that always ends up puking when they drink.

My ex girlfriend yukes everytime she drinks excessively.

"Sup Yukester? Can you not yuke on my carpet this time?"

Yukester by Ross_of_all_bosses January 14, 2008