look up any word, like b4nny:
 
1.
Something said after a conversational phrase that could be interpreted as a sexual reference is said.
John: "Dude, did you do the Bio assignment?"
Mark: "Yes. That was so hard, it kept me up all night!"
John: "Hey-O!"
by atxlonestar21 September 08, 2009
 
2.
hey + yo or you = heyo
person: hello
me: heyO
by psht September 11, 2003
 
3.
A greeting
heyo!
by pimped out January 11, 2003
 
4.
Well I do use this word all the time. It's another form of saying hello! Or hello and yo mixed together.
"Heyo Ziplock, let's own this stupid noobs."
by Namlhof December 06, 2003
 
5.
The bastard child of hey and hello also used as a greeting
- Why hello Rachael...
- Heyo.
by Payton R. January 22, 2009
 
6.
A word that is a mix of "Hello" and "yo". Mainly used as an ordinary greeting for friends.
Anne: Hey.
George: Heyo!

hey hello yo
by x666ThEDeViL666x April 03, 2009
 
7.
Can be used either as a greeting or a statement of surprise. Often Paired with the phrase "there he is"
"Heyo! There he is! We've been waiting on you, Bigglesworth."
by Georgie Porgie September 09, 2005