According to MLB video from today's Phillies/Marlins game, this image comes from when the "Phanatic dances with a fan." According to tipster Zach K, "the Philly Phanatic attempts to convince this girl to flash the crowd, and when she doesn't, he forcibly shoves his snout down her throat."

Potato, potahto.

Phanatic Dances With Fan [MLB]