Tacoing, the act of removing someones stuff from their backpack, turning their backpack inside out, and afterwards putting their things back in. A more advanced version is the taco salad, which is the same, except you tear up peaces of paper to fill the backpack with. See Nuggeting.

The act of extreme masturbation. You must "knock one out" whilst in close proximity to any of the following; Your mum, a nun, your boss, a member of parliament, George Michael. A person with capabilities to act upon catching you mid self-abuse obvisouly ups the ante. Ejaculation must be reached before your danger wank target comes (no pun intended) to investigate. The higher the chances of being discovered with one's pants down, pulling one's war face is obviously where the danger comes from. The more danger involved the harder (or softer) it is to complete the task in hand (snigger). The more dangerous the better. The chance of being arrested, pummeled by an angry father or having your hand severed by an arab's sabre means that you are a pro "Danger wanker."

The act of purchasing a 12 taco party pack from taco bell and using the tacos to egg houses and cars.
Instead of buying a dozen eggs to egg a house, you get a dozen tacos.

Teabagging for females.

The act of passionately eating tacos , usually with a friend who you share an equal love for tacos with, called a taco buddy

The act of folding your tongue into a taco shaped form, while another (another human being) slides their tongue inside of the taco shape slowly back and forth as if you were having sex.

A boring version of talking. Like when some gaming nerd with autisum starts tacoing about The Legend of Zelda, trying to explain the game, and you pretend that you are paying attention. But really you have no idea. People who taco normally don't stop talking until they have bored themself.