a word that typically is said after somthing impressive or remarkable has been stated. Usually something
funny or witty.
what some might describe as a "high
five moment"
it usually means - to emphasize the last
thing you said.
buti it can also be used for no reason at all just to get some attention.
"i just
totally shot this guys head off".."heyoo"
"You know that
look women get when they want sex?"
"No!"
"Me neither!".."heyoo"
(someone waving in the backround shouting):"heyoo!"