A phrase used in response to somebody doing or saying something so unattractive, that the most mighty of erections would quickly shrivel to the size of an acorn. Very much like the head of a tortoise would retract within its shell.
"Dude, did you see Lucy eating that sausage and egg mcmuffin earlier?"
"Yeah man, she got mustard up her nose and proceeded to spoon it out and eat it, total retracting tortoise."
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.
A nickname for Ms. Hamster's pet. He always manages to escape his cage and climbs up trees, waiting to commit suicide by flippingupside down. When it's winter he goes brain dead until he somehow reincarnates himself when spring comes around.
A godlike being who is seen as a tortoise, he has complete control of everything and is immune to every attacks no matter what it does he can manipulate reality to his will and can destroy universes with ease. He is extremely lazy and has no care for anything but has an immense of IQ and fighting experience and can just step on you and you will die. Trevor is also an extremely large tortoise that has a thicc shell around him.