Looking expectantly at the glass, mopping perspiration from my brow, licking my lips? A hard, grinning stare directly at the server? Eyes downcast, my hands lying dejectedly in my lap?
At the wall plug so you can unplug the server as fast as possible before the drink it just poured destroys the hardware
… I’ll see myself out
A combination of all of the above except for staring at the person serving your drink. I would recommend keeping licking your lips to a minimum unless you are trying to flirt with them.
Another completely valid option is, glance and smile to whoever else is having dinner with you, if you didn’t go alone.
Look into the server’s soul
Directly at my groin, please. It’s the best way to show appreciation for my service.
Look at the glass with thirsty anticipation