Towel Week
A crass synonym for the duration of time a woman spends on her period. Typically referred to when during this time, a designated towel is placed on the bed in the attempt of keeping the sheets from getting stained.
Guy #1- Dude, is that the Japanese flag on your bed?
Guy#2- Nah man, it's just towel week.
Guy#2- Nah man, it's just towel week.