look up any word, like sex:
 
1.
Greeting girls use when starting a text or IM conversation with a guy they like.
Dude, she sent 'heyy' with two y's. She definitely wants my penis.
by Princess Pansy October 07, 2010
 
2.
pre-teen and teenage girls usually add extra endings to their words, a fad that started with myspace shit, and now if you type in 'hi' in AIM, you will get "heyyyyy" as a response. it's bastardizing the English language.
Tom: Hi Emily!

Emily:oo heyyyyy

Tom: ...I thought you were an English major

Emily: omg ur a fucking jerkkk

Tom: hmm...Jerk KKK? is that a hidden message that your in the kkk...?

Emily: wait...whattttt

Tom: OH MY GOD YOU WHITE TRASH SILLY BITCH MUTHAFUCKA!!!
by Farahd May 24, 2008
 
3.
A stupid way that near-pubescent girls adress you in any case that involves typing.
Girl: "heyy! u wana go outwith me?"
Kid: "No thanks, I'm gay."
by Jimmison August 02, 2006
 
4.
"Hey you". An friendlier, slightly affectionate version of "hey"
Heyy, how's it going?
by red eft January 23, 2008
 
5.
a more sexual version of hey,
don't get confused with heey which is a more friendly version of hey and has no sexual reference.
watch out though it could just be a spelling error.
Austin;hey whats up
Sarah;heyy, nm taking a shower
Austin; cool, can I come over later?
Sarah;Can you come now? i have a surprise for you
by A. VanDerStarren March 22, 2009
 
6.
a term a young teenage girl will adress the boy she fanicies
boy: hi janise
girl: heyy
by bambamniki November 11, 2013
 
7.
hey; a greeting to someone or something
Kyra said heyy to Victoria
by Kyra Guy October 15, 2009