Where every women in the house falls on their menstral cycle at the same time causing a frenzy of chaos for the man.
Mother: I think I'm getting my period
Dad: oh crap it's shark week
Daughters: we're on our period
Dad: it's Fucking shark week !!!!!!!
Dad: oh crap it's shark week
Daughters: we're on our period
Dad: it's Fucking shark week !!!!!!!
by Flickybicky July 17, 2018

When a poolee in the marines is so fat and slow, two other poolees' have to run back to get him and circle him like sharks.
by dome condom August 27, 2010

by fuckfacebitchez February 27, 2015

Kay: "Taya, Shark Week for you is starting soon."
Taya: "Oh shit, have you started?
Kat: "Yup"
Michelle: "Well fuck, that means I'm starting soon, too!"
Taya: "Oh shit, have you started?
Kat: "Yup"
Michelle: "Well fuck, that means I'm starting soon, too!"
by DeadRoseBringsMusicToMyEars May 16, 2014

by Big Black Deer April 29, 2014

The term referring to "that time of the month" (her period.) This term is derived due to the fact it feels as if Jaws is down under and fucking things up worse then thunder ever could. Thunder down under
by Spelvirki July 23, 2016

by iamsomerhalder October 23, 2010
