the periscope 

The act of hiding your boner between your underwear and your belly so that it faces up 180 degrees, maintaining stealth. The head of the penis sticks out of the pants but is masked by the underwear, jeans, shorts, and/or shirt emulating a periscope. Using the periscope allows you to do everyday activities, while walking around with a massive errection. (for best results use with belt)

I felt nervous to solve the math equation in front of the class, but then I just used the periscope.

I hope parents don't get the wrong idea when I am at the daycare with my raging hard-on, thank God my step-dad taught me the periscope.

the periscope by John Paul VII August 26, 2012

the parascope 

n. a penis trick, while in a hot tub descretely remove your penis from your swimwear, then slowly raise your body until the tip of the penis has breached the surface to the surprise of the other hot tub residence.

Dude you are so gay! i can't believe you just did the parascope without warning me first.

Oh my god, we were in the hot tub with my parents and my boyfriend actually did the parascope!

the parascope by MB DUB February 22, 2006