Eh. I just cover my drink when I'm in public. Even when I'm just in with my wife and it's my tea. Helps me know when it's cool enough to drink/getting too cold and I better finish it and pour some new tea. But like being roofied once is enough and I somehow miraculously made it home safe (much, much longer story than I can get into here. It's about 4 hours spoken, starts ten years before getting roofied and involves a lot of knives. Buy me an ounce sometime)