finger called

when you accidentally call someone from an Apple iPhone (or any other touch screen phone) by sliding you finger across the screen of the phone and selecting someone to call without noticing; synonym of pocket calling.

"Dude, I finger called you before i blocked my phone. Sorry"

Calling coal

When you have no understanding of the subject of conversation and feel you could not be involved. You would call coal.

Bob and Rob are talking incessantly about computers, after 30 minutes of understanding nothing Chris says " I don't get any of this, I'm calling coal"

maiden call

The first call made with a telecommunication device. The call is usually made to someone of personal importance or if the device was a gift, the person who gave the gift.

Term first used in Seinfeld the episode of The Outing.

Jerry: I got a dial-tone! Ok, this is the maiden call.
Kramer: Wait, wait I want to get the first call.

call of duty

When you have to shit so badly that you feel the turtle running for the finishline before you can run to the toilet!

Yo beyatch don't mean to cut you short, but I'm having a call of duty and I needs to find the John Pronto!! Ya dizzle?

bum call

when your butt accidently dials a number

jane: "hello?"
phone:"............"
jane:"dude it's a bum call!"

hope call

A play in poker made on the basis of hope rather than other information.

Player 1: "What was he thinking making that ridiculous call with only middle pair?"

Player 2: "I'm sure he was just making a hope call that I was on a bluff."

self call

Commonplace at Dartmouth College, calling someone out with regards to statements meant to draw quantities of positive attention to oneself.

Cbrandt: blah blah I'm such a sweet dude
Kval: Self call.