Fat girl who calls other people fat, talks about all of her friends, and accuses random people of deleting her livejournals and hacking into her Hotmail accounts. She's also very annoying and loud, and like to say "Yo mama." She thinks she's cute, but she's really not.
Friend: I thought you liked cheese.
Stumpf: Yo mama like cheese!
Friend: Shut up Stumpf. No one likes you.
Stumpf: *Gigglegiggle* You're so funny, friend!