someone who opens his/her mouth to much and sez a lot of bullshit someone who constantly lies about getting laid or something he/she didn't do just to fit in with friends/people
bean shooter
a compulsive liar. they lie or " flap " about everything, to make themselves look cool. Johnny Dee is a flapper.
Johnny - Yo bro i was banging this bitch last night at my cousin john Gotti's house and then all of a sudden bro i dumped that bitch and banged out her mom.
Boy - You are a fucking flapper.