Doing a Nib
When you're on CoD4 and you get an airstrike, you place it perfectly, on top of their whole team, but receive no kills.
"I've got an airstrike"
"Put it on A"
"Well, I did but got nothing, I'm doing a Nib"
"Put it on A"
"Well, I did but got nothing, I'm doing a Nib"