I tend to leave my cell phone on vibrate, so as to avoid having a call wake up a sleeping toddler, or chirp loudly in the public library. But that means I've become susceptible to thinking the phone is vibrating when it actually isn't. The car rumbles over a rough patch of pavement, someone scoots a piece of furniture, two pieces of fabric rub against each other--each time, I snap to attention and check the phone, thinking maybe someone called. Ugh. Nope, generally not.
Phantom phone buzz, I tell you. It's a real thing.