Possible Clues:

• Act as beggar, getting day in prison
• On the --, engaged in scrounging
• Borrow, as a cigarette
• Person who's no good for one, flipping bum
• Rake, for example, up bum
• Rotten fellow, say, flipping bum
• Scrounge penny once in prison
• Bum gets day in lock-up
• Scoundrel, for one, returned to scrounge
• Naughty so-and-so, say, twirling bum