is an adjective that is used to describe those who are fucking idiots, and are entirely oblivious to this fact. Especially pertaining to those who ramble on and on about things that are clearly only relevant or interesting to them. Therefore, everything that comes out of their mouth is comparable to that of a chirping bird or in other words, no need to listen.
jamey: "do you remember that totally ridiculous bro that was trying to talk to us at the bar last night?"
ken: "oh yeah dude,vaugely, he was chirpy as fuck."
another term for a station wagon, mini-van, or any other kind of vehicle that is targeted at the "family" demographic(also M.A.V.)
"Tactical advantages aside, the M.A.V. is top of the line for the holy warrior troop transport manufactured by the Church of Latter Day Saints Military Industrial Complex. Also great for family trips...to heathen lands."