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An acronym for Kill People, Burn Shit, Fuck School as in the chorus of the Tyler, The Creator song Radicals, and is also said a part of the Earl Sweatshirt song Pigeons.
Mike: Kill People,Burn shit, Fuck School!

Jasper: What?

Mike: KPBSFS it's the chorus to a song.

Jasper: What song?

Mike: Radicals by Tyler, The Creator.
by Kuz'n Kush October 14, 2011
Happy St. Patties Day!
"Kill People Burn Shit Fuck School"

The acronym came from "Radical" by Tyler, the Creator. Although he seems like a tool now, he made it big, so you have to respect him. Plus he's got a sick flow.

It's what you say when your educational system is falling right before your eyes,
And all these industry cunts call you a blister on society, fuck them, they're all blind
They despise us but really where is their propriety? Give us a break, would you be so kind?

Man... I have to either pay tuition or pay my rent, I am so fucked for money.
by kaptainketamine August 20, 2012
Happy St. Patties Day!