bunk

Used mainly in the south of England (the better part), in particular London to describe the act of skipping lessons at school. The north of England say skive (also spelt skyve).

Hey John, wana bunk maths?
Yea, who cares that my mum can get fined £4000 for it, or get put in prison, I mean, that's how much it costs for my bus fare. Durrrrrrrrrrrrrrrrrrrrrrrr