Shit your pants

The worst thing that can ever happen to you

Guy 1: you shit your pants?
Guy 2: yeah
Guy 1: *laughs*

Fall by the seat of your pants

Try to fly by the seat of your pants but end up doing basically nothing because you're unable to decide what to do on the fly.

Do you ever fall by the seat of your pants? Like sometimes I try to fly by the seat of my pants, but I just can't decide what to do so I end up just using reddit all day.