The act of deficating with only the buttocks above the surface of water.
Yesterday at the lake I saw a guy up periscope in the middle of the cove while people were swimming all around him!
by sailorjerrypoo November 18, 2010
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A long neck, usually one that is at least twice as long as the person's face. The neck can be used in self-defense to strangle oncoming villans, or used for tasks such as cracking walnuts.
She gave me this look and I thought she was going to all Up Periscope on me and strangle me with it!
by Dr. Von Chang June 13, 2008
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1. When you squeeze out a turd into a persons beer and said turd or floater sticks out of the beer like a periscope.

2.Person who sticks out at the party and leaves themselves open to ridicule.
Joey is outside arguing with his girlfriend on the phone. Hurry, take his beer and give him a Turkish periscope!
by Quantum Robot 6678 July 28, 2011
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The act of spreading a woman's anus open with your thumbs, then peering into it like a periscope. Technically could be performed on anyone, by anyone, but in the original example it was a man performing the act on a woman.

Originated from a post on the Tosh.0 blog.
Man, that chick is crazy. She asked me to give her a Mexican Periscope!
by TexasCracker April 12, 2013
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A manner of applying the Arabian Goggles. You sneak up behind the person and lower your balls onto their eyes, while saying "Down Periscope!"
I snuck up behind Matt and gave him the good ol' Arabian Goggles, Down Periscope style.
by PTPablo October 9, 2006
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#when using ~Facebook, you always appear offline but occaionally open the chat window to seee who is online before disappearing offline again.
Karen up periscoped to see if clair was on then downed periscope and went back to cruising pepoles profiles
by Sniper Smurf August 22, 2009
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