Clever way to use your Whizzinator Touch at the bar
Just before the night wraps up, and you gotta mean buzz (and tab) going, release the silent Whizzinator Touch valve. Warm synthetic urine at body temperature will release in your pants making it look like you had an accident. Dale likes to conveniently go to the bathroom before the check comes, but he's not a bad guy. And now since you beat him to the punch, just say "Sorry Dale, I've been pissing my money away on buying you beers all the time. Now I've pissed my pants -- gotta go!".
Dale will have no choice but to feel bad and finally pick up the check. Sure it looks like you got lose bowels, but hey -- Free Beer!