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1.
The act of attaching two butt plugs to a length of rope on opposite ends before inserting them in the anuses of two participants who will than crawl in opposite directions until one participant looses their 'grip' on their butt plug.

common rules:

The butt plug girth to anus diameter ratio must be equivalent for each participant.

Lubricant must be used to prevent injury

short for butt plug tug of war
Rick and Charlene faced off in the ultimate butt of war competition to prove once and for all who had the strongest anus.
by rickncharlene December 16, 2011