Okay, so everybody who doesn't use some sort of touchphone or oldass flip-phone probably has the ongoing issue of having your phone call people while its in your pocket. Yes, there is a way to lock it before you put it in there, but most of us are entirely too lazy to do it.

Now, I'm driving back to my college, listening to something suitably brutal/epic, and I get a call from a phone number I don't recognize.
"Hello, is there an emergency?"
"um, no."
"Well we just got a call from this number."
"I didn't call 911."
"Your number is (XXX)XXX-XXXX, right?"
"Yes. I don't even know how I did that, it was in my pocket the whole time." <- lie, I just didn't want to say it was my ass.
"That is okay. Goodbye."
"Sorry about that, bye."

Sure enough, I look at my phone and I had indeed called 911. What the fuck, butt. What the fuck.

Man, what would have happened if I farted or something? The poor dispatchers at the nearby town might have thought I was calling to report a sudden artillery barrage by an emerging paramilitary skinhead group or something. Or terrorists.

tl;dr: I buttdialed 911 and the world needs to know.