To "ugle" is to take a dump; to be "ugling" is the action of taking that dumb. An ugle can also be a noun signifying the poop itself. If you need to take a shit, then you are feeling ugly (uglish is the incorrect terminology)
Defendant: For what?!
Judge: Sky dropping ugles on the people of this fine city from your plane.
Defendant: I was feeling ugly and the toilet was occupied, I'm sorry.