My first guess upon hearing "tinkle" in a bar where two men are about to try and kill each other would be that I'm experiencing the sound of someone about to need a new pair of chaps, but I'd be wrong:
I don't care how much fine china he hurls, there's nothing scary about a man with feet that small, stuffed into high-heeled cowboy boots, mounted by highwater, rolled-cuff blue jeans. Combine that with a "threat" to "throw lead" with, one assumes, the same limp-wristed lack of athleticism as the glass in question, and I think involuntary bladder-loosening is the last thing we have to worry about. Laughter, yes. Wetting pants with a "tinkle" sound, no.