Pie in the nose
I was at summer camp, and we got to pie our counselors with whipped cream on paper plates. My two friends and I pied one of our counselors, and then they stepped back, but I took my hands and rubbed the whipped cream all over his face. Apparently, one of my fingers went straight up his nostril! I basically picked his nose! That counselor and my cabin mates teased me for the rest of camp.