1.) The last bit of time that peninosaurs walked the earth.
2.) A scab-like period, in which the poor girl bleeds clotted blood wads, that are...you guessed it... "crusty."
LISTEN HERE YOU CRUSTACEOUSCHEAPSKATE, SQUIDWARD'S BEEN LIVING IN MY HOUSE DRIVING ME CRAZY AND YOU'RE NOT GONNA HIRE HIM BACK ALL BECAUSE OF A STUPID DIME?
when you have sex and your intercourse partner cums on you're vaginal area and you forget to clean up and it dries up and stays on your vagina and it hardens into a crust