Fart-Toon Card Trick
A card is freely named aloud by your spectator. You display a deck of cards, showing all the cards in new deck order.
On the backs of the cards, you show a stick figure magician, and explain that he's going to reveal the chosen card. Riffling the deck like a flipbook, the stick figure eats a taco supreme (with extra hot sauce!), which doesn't seem to agree with him too well. The stick figure emits a gaseous cloud from his rear end, with the selected card revealed among the toxic fumes!
From the minds of Dan Harlan, creator of the original Card-Toon, and Dan Alexander.