This story always cheers me up, I read one a long time ago, it wasn't the same situation, but had the same 'Hahahaha, oh wait, what?' factor.
Apparently this guy was queueing up for ages to see 300, all the while there's this fat ***** behind him being loud and obnoxious as many fat women generally are.
Anyway, they finally get into the cinema and she sits right in front of him, still yapping away, and when the certificate thing flashes up with 300 she stands up and starts wailing, 'what, this isn't what I fucking came to see!'
Legend then has it that the bloke, now at his wits end, stands up and screams 'THIS. IS. SPARTA!' and boots her full force in the chest, sending the fat sack of cum tumbling all the way down the stairs.
The story ends with our hero being escorted from the premises to rapturous applause, closing with 'I think I might be going jail, but it was totally worth it.'