There are several meaning to the word yoy

1.) A word that can be used while having sexual intercourse
example of this would be...

While making intense sweaty love to your partner, he/she yells out "YOY" or "Oh YOY ME"

2.) Replaces the F word.
Example of this would be little max fails a bio test because he didnt study.

"YOY" he yells out in frustration

3.) Can be used when somebody says something that contains a sexual reference
for example a woman states her anger with the hot dog stand by saying

some random woman- "These wieners are too big."

little max- "Yoy"

4.) Can be used to state a feeling. This could be when your tired, sad, happy, angry, ect

the tone vary's on the feeling

Misspelling of yoyo. But now some use it instead of yo.

An expression of disbelief or surpise

the distinctive sound Doctor P makes in his tracks

why,oh, why

Normally used by people who are in shock, not just teen girls. So people stop saying girls use all the abbrievations.

A word used to express agreement or satisfaction with either a statement, question, or idea. Can also be used simply to express excitement.

A joyful greeting or goodbye. Can also be used to describe any action.