The part of an item of food you and a friend purposefully don't eat when sharing said food item, as to not accidentally ingest some of the other other's saliva. Thus preventing the spread of germs.
Mark: "Dude can i share that piece of pizza with you? I'm starving.... "
John: "Sure... I guess, we just have to be sure to leave a saliva buffer zone..."
A better version of the Wisconsin floor buffer. It involves quolls and toads. It doesn’t take much to figure out who comes out of the losing end on that one. Spoiler alert toads suck.
“Tommie if you don’t figure out how to spell your name ImmaMilwaukee floor buffer yo toad behind”- worlds best quoll
The unused urinal(s) between two males when the extra capacity could be used. Most men would rather wait for someone to finish then have their penis in glancing distance of another man to avoid any assumptions of homosexuality.
Male 1: Why don't you just use the urinal between them?
Male 2: I need my gay buffer, I don't want them to looking at my dick.