I did this today to much laughter. A friend was trying to explain to a new friend how I'm quite good with a deck of cards. He was talking about dexterity and finesse etc which gave me an idea. I pulled out a deck, handled it rather clumsily while I had her pick a card. I explained that my friend was just flattering me and that I actually had no finesse at all. She returns her card to the deck, I table it and begin pounding my fist firmly, but not annoyingly loud, on the tabletop causing the cards to separate to her card. No finesse in that