Given their well-chronicled history of Santa-booing, opposing-team-injury-cheering and general mayhem, it takes a lot for the behavior of a Philadelphia sports fan to be labeled "shocking."

But Matthew Clemmens proved, quite improbably, that where there's a will, there's a way. The 21-year-old native of Cherry Hill, New Jersey (mug shot, left), deliberately threw up on the 11-year-old daughter of an off-duty police officer during last night's Phillies game.

Clemmens and a friend were sitting behind Easton Police Capt. Michael Vangelo and his two daughters at Citizen's Bank Park. The men were reportedly being abusive all game -- spitting, cursing and spilling beer. When Vangelo pointed this out to an usher, Clemmens's buddy was removed from the stadium.

That apparently set Clemmens off, big time, given that he immediately announced his intention to throw up on Vangelo and his daughters. He then stuck two fingers down his throat and proceeded to do just that. Clemmens also allegedly punched Vangelo in the head.

At that point, witnesses intervened and subdued Clemmens, who was arrested for 15 different offenses. He also reportedly threw up on the arresting officer.

The most compelling piece of evidence against Clemmens may be his mugshot, as he happens to look exactly like the kind of guy who would deliberate puke on an 11-year-old girl.