DO IT!!!! We didn't do a dollar dance, instead we had jars with a sign: "who gets the cake in the face? $1 = 1 vote".
Me? $56. Him? $146. The guests loved it and it was so much fun.
We had prestablished rules (mouth/chin only, no hair/eyes/nose) do it was easy to clean off. But I'll never forget how much fun it was. That was the most attended part of the night.
Want something fun! Cake in the face vote!