When someone butt dials you through facebook's phone calling feature, it is properly known as a buttfacebookdial.

Buttfacebookdial is a special form of buttdial, or butt dial.
I just got a buttfacebookdial from my brother.

When I put my phone in my pocket I buttfacebookdialed my boss and lost my job, because I had called in sick.
by NeologianPJG May 4, 2016
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