Top definition
When someone in a public restroom (especially at work) gets angry at the lack of cleanliness/maintenance and purposely trashes the place by throwing paper towels on the floor etc.
Co-Worker 1: Wow! Is the janitor on vacation this week? The bathroom on the first floor is a total mess.

Co-Worker 2: Totally! I was so pissed, I was feeling some bathroom backlash so I totally trashed stall 3.
by yowas August 04, 2009
Get the mug
Get a bathroom backlash mug for your barber Bob.