I saw those in the Skymall catalog!
I was going to, one of these days, show them off in class. but you beat me to it.
It’s actually some sort of glass/ceramic. It just looks like a red Solo cup.
Yesterday, I was able to do a good thing for a fellow contractor-he was about to be stiffed by a dishonest and greedy person who did me that bad turn a few years ago. A heads-up, a little info-he got paid right now in full, and voila, sinless revenge that left me smiling...
ok then... i’ll have me a marterini or three....