Now I know I can be a bit gullible sometimes, but I don't think I am being taken for a ride here. They seem genuine, without much sniggering. Or maybe I'm being fooled too well.
My Year 9 class inform me that 'boofing' (rhymes with woofing) means being nerdy or geeky. For example 'Why did you sit me at the front of the class miss, everyone will think I'm boofing', or 'Can I try your glasses on... I look right boofing'.
This is ever so slightly isolated rural Sussex, but even so I think they are fairly attached to the world. Yet this evening a quick search on google and urban dictionary tells me that boofing actually means inserting drugs up ones backside for prolonged effect, or other such anal acts. The fact that it is also a term used in kayaking saved my google images search from being too explosive.
I think this will need a bit more investigation.