Phone paranoia

When sitting anywhere but a car especially with your cellphone on silent. Every slight bump and jolt seems like it is vibrating. This is especially traumatic when you actually are waiting for some important call.

Dude 1: What the hell is that guy doing?
Dude 2: The one with torn clothes and wild eyes?
Dude 1: Yeah, he's pulling his cell from his pocket every twenty seconds.
Dude 2: Oh, that's just phone paranoia.