(at concerts) someone who relies on the kindness of others to pay for their ticket, beer, or whatever you will give "Hey man can I hit that?" "Dude can you spare some floorspace"
Watch out, they may attempt to drain you- will take or ask for anything in sight...may even order PPV on your dime if left unsupervised. (you don't wanna know what happens next)
1. If you go to the port-a-john by yourself, watch out for tour skids like Zippy.