I used to get these on my hip all the time, back when I worked at BlackBerry. (yeah, yeah...rub it in) 😉
One of my friends had "phantom hip vibrations" when he was snorkelling on vacation. I had it in the shower on a regular basis.
I've enjoyed that going away since defecting to an iPhone many years ago (actually wore a 3GS on my hip next to my BB for a year and a half trying to piss off Mike Lazaridis, but that's another story).
Really hoping the feedback from the watch isn't significant enough to recreate this...don't miss it at all!! 🙂