When the huge boobs of a mom figure are squeezed into your chest when given a long enthusiastic hug. Typical offenders are grandmothers, aunts, and other older female relatives. Usually brings on feelings of utter nastiness.
John: Honey, what's wrong with you?
Jane: Omigod John, I just got the mom boobs from your mom!!!
When you are driving your car like an idiot because you are going to shit
Officer: Sir do you know you were going 80 mph in a 25 mph zone?
Driver: of course officer, I was going to shit my pants
Passenger: He was poop driving sir.