Recently did this at the middle school dance that I had to chaperone w/some fellow teachers. One of the teachers brought in her karaoke machine for everyone to use. We signed students up and some of the 6, 7 & 8th grade girls signed up two of my co-workers and me to sing "Stop! In the Name of Love" and it was hysterical!! The kids loved it that the teachers were up there making fools out of themselves!
Then, to mix things up, the teacher running the karaoke machine put in "Summer Lovin'" (from Grease) and had the boys do the boys part and the girls do the girls part. It was v. cute and we were all laughing and having a great time w/it!
If I were anywhere else (ie: bar, etc.), I would never, ever do it. But I'd do it for the kids!