Something I didn't know...
Proper beer glasses, the ones with a beer brand name on, have a small disc in the bottom of the glass. When the beer is poured something in the disc causes the beer to continuously form bubbles and not go flat. When the disc stops doing that, it is time to throw the glass into the recycling.
My nephew told me that. But I told him something he didn't know. That IPA stands for Indian Pale Ale.