Top Definition
Is a way to get stuck up more hours at work. It's also a great way for your boss to keep you sucking their asses, whether they want to or not, they activate or deactivate your on calls.
I got an on call activated today, so I couldn't go to the beach! Damn fuckers!
by you wouldn't care September 05, 2005
When your friend leaves you and, or others behind because of his Girlfriends roasting him to come to her.
Hey man where did you go? You just left me here man, were you On Call?.

I gotta go man, my GFs wants me. On Call.
by Ox9 August 13, 2015

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