Pretending you're headed to the bar or the bathroom and instead leaving the establishment to either pass out, puke, or go bang a nasty hood rat and to never be heard from again.
(and more importantly avoiding the shit storm of your friends heckling abuse for either admitting you're leaving because of the aforementioned reasons!)
"You think you can catch Keyser Soze? You think a guy like that comes this close to getting fingered and sticks his head out? "My guess is you'll never hear from him again."
I keyser sozed out of that place and never looked back. SUCKERS!