When a woman thinks she's off her period and stops wearing a pad/tampon only to realize later that she bled in her panties. Usually happens on the last day of a woman's period.
Person A: I wouldn't talk to Rebecca until she's had a shower.
Person B: Why?
Person A: Last leak.
Person B: Shit, that's nasty!
Person B: Why?
Person A: Last leak.
Person B: Shit, that's nasty!
by K. Sakoori September 21, 2013