b) borrowing an item
c) borrowing a practice of sticking...
b) Can I bum a quid?
c) Can I bum a fag?
2. To engage in anal intercourse.
3. To get something by begging, or mooching.
2. Those fellows over there enjoy bumming. The taller one bottoms.
3. That wanker's always bumming fags off of me.