2.) When you forget to turn on the number lock on your cell phone and you sit on it causing it to accidentally dial a number.
2.) Friend 1: Hey, why did you call me yesterday?
Friend 2: What? I didn't call you.
Friend 1: Well I got a call from you on my call log, see?
Friend 2: Oh, wait i had my phone on my back pocket yesterday. I made a bootie call.