"Dave": "You know when you have a cockroach and they run round the house and get into a corner? We used to have these shoes called PRFCs – Puerto Rican Fence Climbers, okay? And this was aptly titled because if you were running from the police or what have you, and you were wearing your PRFCs, you could hit the fence at a dead run and your foot would stay in and you could commence climbing immediately, which was the essence of the whole sport anyway. And these were also great shoes for when the cockroach moves into the corner and you can't get at it with your foot or the broom anymore. You just jam your toe into the corner and hit as hard as you can. And if you did it right you got the full bug. So this slang means — bammm! — you have to give it everything you've got. Make the maximum effort, do everything possible, get the full bug."