Generally, a wide, thick butt that doesn't have reasonable curvature (A.K.A. bubble butt) or shapely definition.

A large butt that lacks roundness (may be flat in places), although it may have depth, and a shelf.
My girl gained a bit of weight after the baby, and it all went to her hips. Her booty used to be round, but now it's more of a tank ass now.
by King Jones215 February 21, 2022
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A conference room inhabited by substandard corporate executives. Etymology: Shark Tank
“The executive team is stinking up the shart tank to review quarterly results.”

“Back to the shart tank to give a marketing presentation.”
by Wordy Word February 27, 2021
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A small space containing over a tsp of liquid flatulence...
Luckily my shart tank held out against those brown pointers otherwise I would have been a goner!
by Mr. Tassie Tuna March 20, 2022
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When a less than optimal deal is presented and you take it because your don’t know shit
Dude got Shart Tanked by that con man on the tv last night
by angeloregon August 1, 2021
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Taryn cycle tank: after changing the water in your aquarium everyday the nitrate and nitrates cycle because your not suppose to change the dirty filter for the water to cycle.
Your aquarium water doesn’t look clear. It’s because “taryn cycle tank”

but she just did a water change an hour ago.

It doesn’t matter.

She’s a fish expert.
by Bigbirddebelen May 3, 2022
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A group of people consisting of all females and one male.
Hans, do you have extra dick pills, it's a squid tank in here!
by 2guysandagirl August 18, 2022
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To fail utterly, completely, and in public view.
by Withsticks August 5, 2020
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