Renting Beer

"You can never buy beer, you just rent it." -- Archie Bunker

You have probably heard this saying or some variation of it, right? Well I got to thinking this evening...has any bar, pub or tavern ever made a gimmick out of this? I'm thinking something to the effect of charging you a "deposit" for each beer you order, which gets returned to you after you visit the bathroom.

I can think of at least a couple variations on this: maybe your deposit isn't paid back to you, but you get credits toward a free beer. Or maybe the deposit could go towards your tip, if you prefer. Maybe the flushing mechanism for the toilet/urinal triggers a ticket to spit out of a machine (like skeeball at Chucky Cheese's).

Anyone visited a bar that does something like this? If so, let me know!