The act of entering a Wal-mart between the hours of 11PM-5AM not to purchase any items, but to solely observe and/or record the actions and behaviors of the middle to lower class late night shoppers. Usually done for entertainment purposes or internet documentation. Act upon with caution, for the consequences of this action may result in one or many of these symptoms: Life-long emotional or physical scarring, Diabetes, Upset Stomach, Violent eruption of bowels, or lose of friends.
"Dude! Let's go Wal-Marting!"
"Naw man, everyone seems to have some weirdlegdisease"
The act of grabbing or manipulating an object (i.e. Penis) inserted in an anus with one's hand or multiple fingers through the vaginal wall while said hand or fingers are inserted in the vagina.
I was oven mitting my boyfriend's cock during anal sex and i was fisting my pussy. I grabbed his cock through my pussy and started jerking him off while he was still balls deep in my ass.
(v) the act of quietly and secretly enjoying a private joke with yourself, to the point of abdominal pain. (that would be why it rhymes with "birthing").
Chris was mirthing to himself in a corner, giving him the acute appearance of an individual in need of a straitjacket.