1. A greeting based on the greeting, "hello." Heyo is meant to be a more positive alternative to the monotonal "hello" and simple "hi", optimally used when said in exclamation but not necessarily since the greeting still implies this when said in a normal tone.
NOTE: Heyo when used in this manner is NOT meant to be a combination of the greetings, "hey" and "yo".

lil mad is like big mad but the opposite, you mad but not mad to the extent of pullin somthin

A greeting

Heyo a DISCORD black hat hacker clan that TokenLogs , Nukes and Wizz servers and accounts in the community.

Something said after a conversational phrase that could be interpreted as a sexual reference is said.

hey + yo or you = heyo

Well I do use this word all the time. It's another form of saying hello! Or hello and yo mixed together.