Mormon Party
A party which is considered normal until one person invites many unknown friends, who show up unbeknownst to the host, and were not invited either for a reason or shouldn't have been invited in the first place.
Dammit, David just made our pre-game party into a Mormon Party! Next time we drink at his place... upper deck!
mormon trampoline party
A party that involves Mormons and trampolines.
Sean's Mormon trampoline party was really fun.
Yes, those Mormons really know how to jump!
Yes, those Mormons really know how to jump!