I admit, I have a weak stomach so anything involving bathroom humor makes me gag. Going with the immediate, visceral reaction definition to "squick", I think gagging qualifies. Also, that part in Van Wilder with the dog semen and the cream puffs... ugh, I REALLY can't go there and I'll never forgive the person who made me watch that and didn't warn me first. In fact, I have to gargle with 2 liters of mouthwash right now just from thinking about it.