A lot of students have pulled a lot of pranks on teachers over the years.  But finally, some PAYBACK:  In Worcester, Massachusetts (--pronounced Wooster), the teachers at Abby Kelley Foster High School pranked their students by interviewing them on camera, and asking them to reflect on the school year . . . then dancing like idiots in the background.  They ended up completely cutting out the students' audio, and set it to the Whitney Houston song, "I Wanna Dance with Somebody".