A mystery to man since the early 1800's, peefs have forever changed the world of gases. Peefing is a voluntary release of gas from the male's penis. The act of "peefing" has also been known to often "shoot out" in somewhat of a machine-gun like fashion. Some scientists have compared "peefing" to the more well-known, but less awesome women's "queef". Many men have also been capturing their own peefs in a "peef box" for generations. This box stores the peef gas for later use. These boxes, not so much anymore, back in the day were passed down from father to son. Peefs are also very convenient in a dutch oven-like situation.
Matt: Yo, what the fuck's that smell?
Mike: Oh, my bad dude, I just peefed.
John: Dude where's your peef box?
Mike: It's filled man, I peef like it's my job.
Matt & John: Nice.