고 자빠지다

crude 'sitting around doing X'

자빠지다 literally means to fall flat on your back; tacked onto a verb with -고 it turns the action into something contemptible. 놀고 자빠졌네 is roughly 'look at them, pissing about', and 웃기고 자빠졌네 dismisses someone as absurd. It is genuinely rude and sits here alongside outright insults. One line uses it more literally: 술 먹고 자빠져 있었냐, 'were you passed out drunk?'.

Register: vulgar, insulting