When you hear beeping sounds as if your pager has gone off, when in fact it hasn't.
When you feel a vibration like the pager went off but was only the cars engine reving mimicking the feeling.
1) Oh crap my pager went off. nope just my mind hearing things again.
2) Just felt my pager vibrate. No was just the subway passing by again.
This pager paranoia is stressing me out.