kneeslapper

something you use when a jokes not funny but you want to make the person feel better about themselves.

friend 1:why did the chicken cross the road
friend 2:idk why...
friend 1:to get to the other side
friend 2's mind:unfunniest shit ive ever heard god damn learn some humor
friend 2:wowee what a kneeslapper!oh geez you really got me with that one!!!