Greg: Did you hear Frank's man grenade bath blaster after he ate all that Chipotle last night? It shook the house, I swear!
Bill: You mean I stayed in the bunker all night, thinking it was an earthquake, for nothin?
Greg: Well, at least you were partially spared from Frank's wrath.
While occupying a bathroom stall, the act of urination and/or defication from an elevated horizontal body position, achieved by propping oneself in the air with arms and feet pressed against the walls.
Example (past tense): I spider-manned that truck stop bathroom so my pants didn’t have to touch the nasty floor…which is now even nastier, because I couldn’t aim for shit.