When you're taking a
piss in a bathroom stall but the door's lock is broken, so you stand on one leg to
pee while the other is holding the stall door back. Named after the Rhythm
Heaven Fever game Flock Step.
"The urinals were all being used, so I had to use the
broken stall. I ended up doing the
Flock Step lockstep, and I practically
pissed all over the room."