The art of hiding an erection while sitting and leaning one's upper torso at a 45 degree angle betwixt one's chest and lap. The owner of said erection then proceeds to arch their back in such a way that makes them appear to be sitting upright. This causes said erection to recede into the body causing a "turtle shell" effect.
by JoPaGeRi.TBC August 16, 2007
the muscles on a toned or muscular persons body where their abnominals meet the top of their thighs, creating the look of a turtle shell
by ashleyshubes May 02, 2009
a drug that can seriously mess you up. some say it comes from the eggs shells of turtles from madagacar so that's why it's so hard to get, but others claim it's made by heating up a very rare certain type of fungus, one that when it is heated, takes a form similar to that of the shell of a turtle. taking one turtle shell can greatly increase dopamine uptake in the brain and send the user on an unbelievable trip. there are no known addictive properties, however there can be damaging long-term effects to the brain and CNS.
Man, I did turtle shells last week, and it was the most insane trip I have ever been on...I was absolutely shell-shocked.
by shibton3982 August 12, 2006
There is nothing to describe about this drug, because many people do not survive the trip, but for the ones who do, they say it is the craziest shit theyve ever done. Don't even try to find the drug because it is only found on 3 beaches in madagascar where leatherback turtles lay their eggs exposed to sunlight, which is what makes the drug so powerful.
by Gregamunji August 10, 2006
When you cum so hard your abdominal muscles contract involuntary causing you to hunch forward making your back curvy like a turtle shell
Person 1: Dude i came so hard last night! I turtle shelled for atleast 20 seconds.
Person 2: Nice bro. *high fives*
Person 2: Nice bro. *high fives*
by Thatguywhocamehard September 28, 2017
V. The act of taking someones backback when they're not looking, taking everything out of the main pocket, turning the bag inside out, placing everything back in, zipping it up so as the zippers are on the inside making it difficult to open back up, and placing it back next to the person before they find out what you've been doing.
Dude 1: Dude Joe's not looking, grab his bag.
Dude 2: I got it.
Dude 1: Give it here.
Dude 2: What are you doing with it?
Dude 1: Im turtle shelling it.
Dude 2: Nice, go go go.
Dude 2: I got it.
Dude 1: Give it here.
Dude 2: What are you doing with it?
Dude 1: Im turtle shelling it.
Dude 2: Nice, go go go.
by Dickfacelardass101 March 09, 2009
What happens when you hold your poop for too long. When you finally sit down on the toilet, you let loose only to realize that it may have been on the verge of popping out, and that you probably had less time to wait than you thought.
John: "Bro, Sidney was over for 6 hours last night and I had to shit so bad!"
Steve: "Damn, son. Did you drop a deuce with her at your place?"
John: "No, but I was turtle shelling it like a mothafucka. Almost shat everywhere."
Steve: "Damn, son. Did you drop a deuce with her at your place?"
John: "No, but I was turtle shelling it like a mothafucka. Almost shat everywhere."
by 2toedsloth December 16, 2011