1 definition by Fishballs
The days when your man friend/spouse/partner/coworker etc. acts like a total intolerable douchebag when he is otherwise decent.
'Manstruation is wreaking havoc on Bob. He just told me to f*ck myself after I asked him to wipe large chunks of Pop Tart off of his expense report.'
by Fishballs December 2, 2008