A baffoon who uses his dick for unsexual reasons. He bungles while eating stuff. A shebling also likes to cum inside dictionaries, in which he slurps and eats mangos after. Someone who is shebling is also poetic and has a weird affection to fat gamers, where "it" is very gay and fat.
"Hey look at that guy, he's naked!"
"Yeah he's sheblinging"
If something is shellings, it's absolutely amazing. This is most used in UK Garage/ DnB subcultures. Many variations of this word is used to mean different things. Shellerz/ shellington / shelby are all different variations meaning the same thing. If a DJ is "shelling down" at a rave, it means they're shutting it down with their lyrical skill.
Taco Shelling is the female equivalent to tea bagging. That is to say when a woman squats over someone and presses her vagina into them. This can range anywhere from a sexual act to an amusing act when done as a prank or even a humiliating act when performed upon a defeated opponent. This is named as thus due to the internal and 'wrapping around' nature of the vagina. The act is akin to putting meat (or other things) into a taco.
We all laughed as we watched Jennifer taco shelling Sarah's face because she fell asleep on the couch again.