1. On the dance floor, move towards the middle of a big group of people. Usually that’s where a lot of the grinding is but it doesn’t always have to be.

4) Intersperse dancing with non-dancing activities, such as raffles or snacks, to quell a build up in grinding. 5) Persuade first the people who are most persuadable .

One year we sold T-shirts that said ‘No bumping, no grinding’ to promote clean dancing. We had chaperones use flashlights to shine on couples dancing inappropriately” — but to no avail.

Then there's Channing Tatum. If dry humping was an art, he would be Picasso. As the evening turns to night, Mike treats Max to a master class in the bump n' grind.