The action of fingering a girl and after the first few minuets the man decides to stick his entire arm up the womans vagina While yeling "ARMAGEDON" in a hill billy voice... sometimes resulting in etreme euphoria or death.
Brian and Maher were fingering their mom and gave her an Arm-a-gettin. Now they invited us to her funeral.
Receiving a blowjob in public, while sitting behind a desk or in front of a podium, so that the person adminstering the blowjob is hidden. (ala Steve Guttenberg in the film "Police Academy.")
When you are on a road trip with your girl, she wants to give you that road pleasure, you pull over in the snow and get a blowie in the snow. You just got a frosty!