A sexual act that is similar to the doggy style, but you cover the receiver with a duvet. When the receiver comes up for air, the giver delivers a blow to the head with a pillow.
I was doing tortoise position with Kosta's mum last night. I think i gave her concussion. She still hasnt come out of her shell
A cheap alternative to the well known Turtle Beach headsets, the Tortoise Shore is a homemade device used for online video game play. It is made from a pair of headphones being worn on top of your game headset, which can cause significant discomfort.
Pro: Wow kid I heard you coming from a mile away with my $200 Turtle Beach.
Random: Well I can only afford this lousy Tortoise Shore, so I guess I deserved to lose.
When someone puts a washing basket on their back to look like a tortoise and performs a cock block by crawling onto a couple's bed whilst they are making intercourse
"i got completely undressed, put on a washing basket and cock block tortoised onto nat's bed who was shagging zach"