The action of giving/threatening to give a tortoise as a present meant to seek revenge on someone for as long as the tortoise lives (approx. 100 years) for suffering caused from their actions. Commonly refered to as an RT.
Im totally going to RT Sally for moving away to Vancouver for so long.
Stalker slang for someone who has been successfully intimidated into confining themself to their home, venturing out rarely, like a tortoise sticking their head out of its shell.
My ex-partner is such a tortoise, I wait outside their house for days and never see them until they dash out for groceries. Job done.
the act of sex between older persons and those specifically those who have suffered hip replacements or other movement difficulties. Tortoising can involve the use of a zimmer frame to create the shell in particularly active relationships.