Whilst playing MarioParty, MarioKart, Mario,(or any other franchise that Nintendo has some how managed to corporate rape by forcibly inserting Mario into an area he need not be) and preforming any of the generic party fouls that any 17 year old and above are familiar with, I.E. spilling a drink, going against the grain of the environment, or doing something insipid and embarrassing.
While Daniel and I were playing MarioKart on his Wii, he said somethingreally retarded and I called a MarioParty foul on him, that twat.
When you're in a hurry to get somewhere so you cut corners and weave through traffic without signaling to get there a bit faster while being a total asshole.
Can also apply to walking - going off of paved walkways, stepping over the grass and through bushes, weaving through people like traffic and not giving a shit if you bump into people's shoulders or step on flowers.
Dude #1: Fuuu, we're going to be late and there's an exam today.
Dude #2: Nah we'll be fine, I'm gunna mariokart this shit. Fasten yo seatbelt.