Another name (euphemism) for a shit stirrer. Back in the day when folks used outhouses, they often had a stick used to stir in lime or other things, often called a pudding stick. Also related to "stirring the pot."
Be careful what you say around Bobby; he's a first class pudding stick.
Getting beaten with the ugly stick means your personality and the way you behave towards people is so ugly that somebody along time ago must have beaten you with the ugly stick over and over because you’re basically trying to inflict the same ugly that the ugly dick caused onto you onto others.
Vanessa is such a bitch. She’s always angry. She doesn’t need to be that way. I think the problem is she got beaten with the ugly stick way too much throughout life. And now she wants everyone to feel the same ugly she’s felt. Well that’s not our problem!