If you can read this

so, ive got this thing, its on friday.
im supposed to go out with a girl from work to go roller skating.
problem is this: she's overly happy, to the point of annoyance.
and shes fat. shes not OMG ITS SHAMU fat, but still fat. and to add insult to injury, her last name starts with "moo."
i have nothing else planned for friday, and i want to get out of it.
advice?