I had a tail!

So tonight I'm standing in the hallway with my other classmates waiting to get into the lab and take the midterm when the lady next to me says "Uh, you have something sticking out of your pants". Oh my, what could it be? I reach back and much to my horror discover it's toilet paper! I had a TP tail! Luckily I hadn't walked very far from the bathroom to the class so probably no one saw me. I'm glad she told me considering the midterm was conducted at lab stations and we were constantly standing and moving around the class. Geez....