Bum a fag

exp.

A phrase generally used by social smokers or poor college students (on de slate) when asking their friends for a cigarette.

In use

Well butty, can I bum a few fags, I'm hangin' for a few puffs... I haven't had a drag in yonks!

Let Lawrence Muck translate it to posh English for you
Lawrence Muck

Welcome aboard, dear thing. Would you like me to translate 'Bum a fag' in use for you?

Good friend, might I cadge a few cigarettes? I am yearning for a puff, for I have not had a drag in ages!