shoutout to someone...beginning a conversation..."eyo, wuttup". Calling a friend to attention.

eyo (hEY YOu)

Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.

eyo -> fast way of sayin hey yo

E = Eat(ing)
Y = You
O = Out

To eat a girl out.

Extremely tuff. A phrase used to indicate excitement, and in some cases "gaiety".
Also, unbelievably surprising; used to indicate content, satisfaction, astonishment, and of course, GAIETY

when your driving off and you're like "E. Y. O. !!!!!!!!!"

to eyo