Verb: To take a shit. So called because the act of the sphyncter muscles, whilst pinching off the loaf, creates a guillotine effect upon the toroise's (the shit) neck.
"Hey guys, I'd love to go to the store with you, but I've really got to behead the brown tortoise right now."
by A Dub November 09, 2006
buy the domain for your pet vlog