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 !!!!!!!
by Flickybicky July 18, 2018
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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.
Shark ..... week
by dome condom August 28, 2010
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The time during a woman's menstral cycle in which she attacks and tries to murder those around her.
I'm not going over to my girlfriend's place until Tuesday- it's shark week over there.
by fuckfacebitchez February 28, 2015
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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!"
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Sharks like blood. Women bleed once a month. Shark week.
Dude! Do a little xbox today?

Can't. Shark week.
by Big Black Deer April 30, 2014
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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
"Man what's my women's problem?!"
"Dude it is obviously shark week"
by Spelvirki March 17, 2016
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a shark's brain looks like a vagina hence, a girl's monthly period is called Shark WEEK
by iamsomerhalder October 23, 2010
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