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 spicier way to sayridiculous. It is believed the first person to have coined this phrase was probably some ex-indie kid who tried starting a whole new sect of his own. Guess that didn't turn out too well.
"I gave Rob quite the rumdungle - I changed all the clocks in the house to be an hour early, and he's left for school in a rush!"
"Our professor decided to lie to us! She said she wouldn't put a question on matrices in the exam! In other words - we've been rumdungled!"
He's been doing some rundunderous things lately.
She is rundunderous when she goes out to the club with her friends.
They like to make up rundunderous ideas for things to do on the weekends.