Bufferpal

That one friend who sort of acts as a barrier/shield between you and a dickwad whom you don't like and a fight/arguement could always ensue if your bufferpal leaves or isn't there.

Bro#1: Sup hommy! I didn't know you knew Tim?
Bro#2: Yeah he's actually my bufferpal

Bro#1: Oh I figured, man he's really cool.