look up any word, like fleek:
 
3.
EO
the best friend anyone could ask for. extremely humorous. a mood-improver.
EO I like you a lot.
by spongebob March 03, 2005
 
1.
EO
Short for Eat(ing) Out. It is the equivalent of BJ for Blow Job (or Boob Job).
"Chris gave me the best EO yesterday."
"EO?"
"Eat Out"

"If you give me an EO, I'll give you a BJ!"
"Sounds fair."
by Chris Rodrig April 21, 2007
 
2.
pronouced "ew" in other words slang for the word ew to represant something of disgust or vile
"your brother is so cute!"

"E.O.!"
by icoast August 04, 2009