1 definition by Tyy Webb

Top Definition
Someone who unfortunately interrupts your personal bathroom break time by using the bathroom stall directly next to you, essentially joining you while you do your business.
My bathroom time is my personal time I would prefer not to be bothered by a joiner.

I use the restrooms on the 25th floor because there are too many joiners on 26.
#joiner #joiners #bathroom #restroom #stall
by Tyy Webb November 17, 2009
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