The excess fabric in an ill fitting shirt. Typically coming from where the bottom of the sleeves, that are cut way too big, meet the torso of the shirt. This makes the one wearing the shirt appear like he or/she has bat wings.
This shirt would be cool but it fitshorrible, look at all this boufant.
(Pronounced Bah-stin Boo-font) (noun) when a male is performing cunnilingus on a female partner, and the female lets loose a queef of such intensity, that it parts the male's hair right down the middle. ( in a similar fashion to George McFly's hairdo in back to the future).
Skyler went muff diving, and came out with a Boston Bouffant! What a loser!