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periscope depth

When a fresh a deuce is so large that it breaches the surface of the toilet bowl water, exposing the tip to air.

The toilet bowl is designed to use water to contain the terrifying smell of fecal matter. Naturally, when a load is large enough to reach periscope depth it stinks up the bathroom something terrible, requiring a courtesy flush.
"Whoa dude, did you just dump all of Bombay in this bowl? My fuckin nose is going to fall off"
"Sorry after all that built up sushi that dump reached periscope depth"
by Broham Brosef March 1, 2008
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Up Periscope!

1. The act of slowly floating upwards in a hot tub while erect or in the vernacular ,sporting a woody.

Origins: First to properly execute an up periscope one must first " blow ballast " by farting in the hot tub.

If undetected by the other occupants, preferably female, the "scope master" will raise his body until the head of his penis slowly breaks the surface. If he remains undetected he will slowly continue to push his penis farther out of the water until detected.

When detected he will yell "Down Scope" and rapidly pull his body downwards while acting as if nothing happened. If he remains undetected that means the female occupants of the hot tub are receptive or totally hammered, in either case, this often results in a "torpedo" attack after he yells UP SCOPE!

2.A mythical command often seen in WWII movies to raise the periscope. Up periscope is not used by modern submariners. The officer of the deck will inform the watch standers submarines control room the he is "Raising Number 1 ( or # 2 ) scope." at which time he will rotate the periscope ring that activates the raising / lowering mechanism.
1. Dave's penis was totaly out of the water when he yelled " Up Periscope!" "Euwwwwwww a dick!" screamed Denise.

2. "Up Periscope!" Ensign Jones commanded. The watch standers looked at each other in quizzical disbelief. Don't you mean "Raising Number 1 scope?" asked the Cheif of the Watch. " "Uh...right Cheif"...Ensign Jones demurred.
by Global Feetus April 10, 2007
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Down Periscope

The act of ripping a bongload, then downing a beer bong before exhaling the smoke. A variation on a "submarine"
Dude I'm so wasted, I just busted a Down Periscope with a fatty loader of kush and 3 silver bullets.
by Bart Mancuso February 9, 2010
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Reverse Periscope

When you are a well endowed man who sits when he pees and finds his junk submerged at the tip when in the washroom.
Andrew woke up in the middle of the night and couldn't stay standing while he peed. The Leb Rusky sat down and a chill ran up his spine, as his junk hit the the water and became a reverse periscope.
by Reverse Periscope May 30, 2014
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Pool Periscope

The act of poking one’s wiener above the pool surface to keep an eye on the ladies.
Wheelchair Dan wanted to perv on all the women at the Westin pool, so I told him up periscope, then he did the pool periscope and spotted Rhonda with tha honda.
by Skervey McCleary August 13, 2022
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Periscope

When the tip of a recently erect penis peeks over the waistband of underwear, shorts or swim trunks.
I was at the beach and saw Jeanie and got a boner that turned into a periscope. Luckily, no one saw.
by brokenresearch August 19, 2013
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Periscope

When the end of an exceptionally long turd sticks straight up out of the water.

Similar to a "breach" (where the turd will arch up out of the water) but fully vertical.

Both of which, really really stink.
Dude, I just totally dropped a periscope in there.
by h.karl February 20, 2010
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