guestastrophe 

A catastrophe, usually at a party or similar gathering, caused by or involving someone who was not directly invited. For example, they may have come as someone else's guest (a plus one) or gatecrashed the event.

I didn't even know Ned was coming to my place, but it ended up being a massive guestastrophe

guestastrophe by Mickey Babes September 8, 2010

guitastrophe 

A guitastrophe occurs when a guitar solo is so intense, people get hurt.

Damn man, I played some Dragonforce the other day. It was a guitastrophe :D

guitastrophe by Matt Cirka January 15, 2008

gastastrophe 

The passing of extremely pungent gas in a small, socially inappropriate, overpopulated setting. 2-The manipulation of fuel prices to gouge the public for huge profits before leaving political office.

Although the Donald kept his cheeks squeezed tightly together, the fumes building in his stomach from the nachos grande suddenly escaped into the packed boardroom. The gastastrophe made everyone's eyes water.

gastastrophe by enshawntay April 4, 2009