Used by men to describe a particularly unclean woman to another man who is interested in her. Unclean can be taken just about any way you wish, however it usually refers to an STD or a pungent odor.
Comes from the amount of days it will take to get the smell of her vagina off of your hand.
Jimmy, you don't want anything to do with that girl. She's got two days.
an expression used when asking time off from work to cover yourself for two days, not today, because you are going to get so wasted, you'll be straddling the fence
Worker : hey boss, can i have off twoday?
Boss: do you mean today?
did you spill some dumbass on yourself
Worker: no twoday because i'm gonna get so wasted, i'll need two days to cover me.