Taking a taxi and then running away at the end of the fare to avoid paying. Usually done at the end of a brannigan or in conjunction with other drunken activities such as pirate bobbing see also: dine and dash
This guy: Damn Tyrone! How did you get home last night, you lost all your marbles at the craps tables over at Nasty Louises creamshop.
Tyrone: Dag yo, I tooks a runbun to the forested area outside of my cavedwelling so as to fool them authoritahs.
A ratchet and utterly most disgusting and vile thot that has ever walked the planet, smells fishfingered, queefsalot , and gives you a inward boner when you lay eyes on the creature. They usually feed off each other, and breeding them usually results in a autistic spectrum mulatto, further evolving them into ratchet beasts.
Walking in the street Seth came across a wild runtcunt hiding in a dark alleyway. The creature emitted a queef and a foul fish oder. As Seth passed by it, it's arms flailed and he noticed a glimmer of liquid squirt out. As he witnessed this, his cock shot into his bladder. Terrified Seth darted off into the distance, eyes bleeding from what he just saw.
A bit like Dry-Humping, runting refers to two or more people simulating sex, while fully clothed. Runting differs in that it is 'performed' while dancing, usually drunk in a club. It's very obvious and hard to watch. It can be performed by either sex. Attention whores are the main advocates.
'Look at the state of Lorna, runting like a piglet.'
'I'll stay until you start runting complete strangers.'
'I'd a runting good night last night, or was it a good night of runting lol.'