The sexual act of two partners, the girl in a position on her back with her legs bent with knees by sides of head. Then the male holds his "dolphin" with one hand and all in one motion, flicks his rist down sending his member into the anus of the girl. Soon followed by quickly pulling out the member and repeated several times in a row. This of course can only be performed after performing anal sex prior and loosening up the rectum. Also a recent slang term in the Adult Film industry for this act.
"Michael sent the patty wagon Jennas' way after the party last night for $1,000 each"