When I was at Dave and Busters this weekend I noticed a glass that I have never seen before. It was small, like a shot glass but it was shaped like an hour glass with an open top. The bottom was a small chamber, then the middle was a lot thinner, and the top of the glass opened up again. I didnít get a chance to ask what it was but the people I saw drinking from them were drinking some green stuff out of them. Does anyone know what this glass is called, what itís used for, and where I could buy one online? It looks like it might be good for bourbon although it is a bit small. I did a few google searches but was unable to come up with anything. Any input would be appreciated. Thanks. I don't know what it is but I know I want one.