BUP is being true friends with a person otherwise known as besties under pressure a friend or best friend might leave you but your BUP will always be there and never leave
by HawkSlays December 24, 2017

by jibbleblibble April 4, 2010

by fukin.....i dont remember March 9, 2005

by Suicide Notary November 23, 2007

An incredibly annoying word that may be spammed to a group chat many times. This may also come with a picture attachment of a ‘bup’.
by jimmybigboy May 31, 2019
