1 definition by bob_stencil
The act of farting in someone's face, then immediately turning around and slapping them to bring them back to reality.
Jane kept running her mouth at me last night, so I had to give her the flap to let her know who the boss is.
Hey man, don't hang out with John, he's a flapper.
Hey man, don't hang out with John, he's a flapper.
by bob_stencil January 19, 2011