the button on the side of a cell phone to hang up on a caller before you even pick up.

used when you can't or don't want to talk to someone.

also known as the 'fuck you button'
"I've been trying to call Lisa, but she keeps pressing the asshole button"

"My phone rang in class and I had to use the asshole button."
by fashionyourseatbelt October 31, 2007
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