hypo-vibro-chondria
When you think your phone is ringing in your pocket when it's on silent alert (vibrate)... but it's actually not.
Guy: Oh, my phone's ringing. *pulls out phone* Huh... maybe not. Coulda sworn it was vibrating.
Dude: I guess that's your hypo-vibro-chondria playing up again.
Dude: I guess that's your hypo-vibro-chondria playing up again.