For added 'air-tightness,' a tupper-ware party can consist of 6 other men, for a total of 9, plus the girl. These additional men would need abnormally small penis's as they would be inserted into the remaining holes on the girl: The ears, the nostrils, and the eye-sockets for maximum air-tightness.
Everyman should enforce these because there women come home equiped and well prepared!
Bro 2: Sweet is it BYOB?
Bro 1: Nah but they have no cups so its a tupperware party.