A phrase expressed after someone makes a fool out of them selves after professing their undying worth, or intelligence.Pronounced "Hum-bal-ie Dum-bal-ie"
Thumb me dumbly is the acting of taking the nearest mentally challenged person (or group of persons depending on how fucked up you are) and having he/she/them insert their thumbs into your anal cavity
Guy 1: so what did you get up to last weekend bro?
Guy 2: I went to the loony bin and got a few retards to thumb me dumbly
Guy 1: you’re a sick little cunt you are
noun; a way of describing something incredibly difficultto the point that the situation is stupid, making the situation appear to you as if you were high