When you're sprung and in a club, wanting to bang somebody, but the only chick DTF is ugly with a butter face. You take a BUTTER SHOT or two to get ready to bang her. Butter shots are typically high in alcohol content, like doubles or everclear.
James: Man I want to get some
Dwayne: Dude you could bang that butter face ugly chick
James: I'll down a BUTTER SHOT or two, and I'll be ready to go
During a game of downball/four-square or some variation in which a 'mate' knowingly hits it in a place you cannot return it from so as to move up a square and get you out
Just like the Boston Shot glass: where a blokejizz's into two shot glasses and one is inserted in her vagina and the other shot glass is inserted into the arsehole of your partner.
G: Hey Bakes, I gave your grand mother a double boston shot glass.
When you vape an entire bowl into one bag and then proceed to squeeze all the vapor into someone's face. This person has to options. The swallow (breath in) or spit it out (cover his face).