Any type of amphetamine. Usually popped to get pumped up for something serious or something you would otherwise be afraid to do. Mostly adderall but sometimes vyvanse also. Called anti-freeze because it keeps you from freezing up in situations that could mean life or death.
"The streets is mean so I keep that anti-freeze." -Gorilla Zoe
When you see your bro drinking a Smirnoff Ice, look him in the eye, say "PUT THAT DOWN!", and punch him in the face.
The opposite of icing.
Bro...if I EVER catch you with a Smirnoff Ice, I'm gonna set you straight and anti-freeze you.