The alititude in which the gluteal region is found. To catch someone "below sea level" is to find someone staring at another's posterior.
Person 1: Bro did you see Sophie's ass in those jeans???
Person 2: Yeah bro I caught Jason below sea level when she got up from her chair
by primetrack November 17, 2018
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To defecate in such a quantity that the turd(s) you produce rise above the water level in the toilet bowl.
After eating at the buffet I went home and had to break sea level. I feel much better now.
by asdfwerczvxoiu September 17, 2008
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To take a huge dump that while resting on the bottom of the toilet is large enough to form an island
That was a great dump; I just broke sea level!
by randall December 10, 2003
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When someone needs to take such a large dump that the resulting pile of feces rises above the water level of the toilet.
My bathroom smelled so bad since my roommate's shit was above sea level.
by syaoran August 31, 2008
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to catch someone "below sea level" is to catch someone staring at someone's ass. when a "big booty hoe" walks around, you can catch many guys below sea level.
Person 1: Holy SHIT that girl thicc
Person 2: Yea man I can't help looking below sea level !
by primetrack November 28, 2018
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sex on the deck of a boat, presumably at "sea level"
Bored with the formal tour, my girlfriend and I went to the marine bathroom and joined the Sea Level Club.
by Rex Mundi 3 August 7, 2008
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When you take an epic dump, you turn to look in the toilet, and the massive pile of crap is above the water level in the toilet bowl.

Can also be used as "Breaching", if in the current process of taking a dump.
Guy #1 "Dude! I totally just Breached sea level in your toilet!"

Guy #2 "Holy Crap!"

Guy #1 "That's what I said!"
by remotenightowl May 1, 2012
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