A saying used when you want to tell someone who's interested in your girlfriend/boyfriend to back off. Using this saying means not only 'back off' but that the target is your property.
Yo, I see you flirting with my man over there. You need to get off my Kool Aid. He's mine so find your own.
When you are eating a bitch out and she suddenly has her period. Your face is then covered in her blood. You then break through the wall yelling out "Oh yeeeahh!"
"Man, Heather had her rag yesterday and I was able to pull an Angry Kool-Aid Man after I went down on her."
This popular reference refers to the specific suicide method (Purple Kool-Aid)used by the 900+ participants of the People's Temple cult in the 1970s ran by Jim Jones.
There are so many bodies here! Where the f*** is Jim Jones and his Purple Kool-Aid?