Mostly when I see hilarious videos of kids like these. These are the kind of boys that every other teacher seemed to despise, and I loved them in spite of myself. Favorite quote of the video: "This is SO appropriate right now."
ETA: Although having attended many school dances at The Black Hole of Suck, I do sympathize with the principal. Some of the "grinding" I saw at those dances would have fit right in at a strip club. It always brought home how, even though I wa in high school only 11 years ago, times have indeed changed!