Do The Mashed Potato Day!
The wealthy eccentric who kidnaps middle-aged men and makes them do the dances he wants them to do under penalty of death asks that today you do the Mashed Potato. He is watching.
If you do not know the Mashed Potato, improvise. He might not know what it is either, but once he sees someone doing a dance with confidence, no matter what the moves, he'll believe that that is the dance he requested, and he'll have all of the others dragged from the dance floor and killed.
So you know, in case you were wondering, the wealthy eccentric wears only a pair of boxer shorts in the booth high above from where he watches you dance, and he actually manages to get a lot of work done. He is the sort of wealthy man wherein "work" involves nothing more than moving his investments around all day. The wealthy man spends so much time up there in his chair watching you dance that his butler has to beg him to change his boxer shorts when they grow too fragrant. Now do the mashed potato or you'll never see your daughters again.
Happy Do The Mashed Potato Day!