The act of Porcelain Skipper is completed when one person is on their hands and knees, head hanging over a toilet while vomiting. The second person then enters the first person from behind while the first person remains in the kneeling position. The Porcelain Skipper is commonly performed after consumption of alcohol.
The old lady got wasted last night and puked in the toilet, so I gave her the Porcelain Skipper.