My younger DS had a nervous habit of tossing his mug in the air & catching it (when he'd finished drinking).
I wasn't here all the time as I had a long commute. But he broke 1 or 2 mugs a week!
In the end I bought him a couple of melamine ones & said only me & DH could use the breakable ones. He still persisted only the mugs bounced.
once he moved in with D-i-L it magically stopped, along with the annoying habit of getting inside his duvet cover instead of sleeping under it.
(He'll recognise himself if he's on GN - there can't be two!
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Masked protesters block Port of Dover

