The act of pouring cooking oil on the floor of a men's room stall then getting on all fours and forcefully sliding back and forth so to satisfy both the occupied glory holes on either side of the stall. Typically mid-way through the 15 minute session the "stall beast" rotates 180 degrees so that both men get a shot at his anus and mouth. This act is usually performed in truck stops but occasionally in more upscale places such as rap concerts and trailer parks.
Man we stopped at a truck stop on I-40 near Raleigh and the line to ride the "Double Royal Slide" was out the door. I'll swing by on a 2 for 1 Tuesday."
by SlyBoots1414 August 3, 2021