Whack

A makeshift cutting or stabbing weapon, commonly manufactured clandestinely in a jail or prison using commonly available items or contraband. Also known as a shiv, shank, banger, etc. A term used in the Pennsylvania prisons.

Yo you better go hide that whack somewhere because I heard the CERT team is coming.

I’m about to go buy a whack off the Puerto Rican bul

Ronnie just got poked up by 2 young buls with whacks