The act of sitting on a girls face, with your balls resting on her eyes as if shes peering through the lens of a periscope, while she simultaneously jerks you off.
Jen is on her period this week, so I hopped on for a RustyPeriscope.
When you press your butt against a hard, flat-surfaced chair and fart, but there is no place for the gas to escape except up the crack of your ass. and out at the top.
Dude, I laid the biggest periscope fart in detention. I press my butt cheeks against the hard chair and farted and the gas came bubbling up the crack of my ass and peeked out at the top!
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 parentsdon'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 practice of keeping your phone off or in flight mode most of the day to save battery and only turning it on briefly every now and then to check your messages, missed calls, fantasy football points, the football scores etc.
Like a WW2 submarine; coming up periodically to check their position and take on fresh air before going deep to avoid detection.
Jim: "Does Clive know we're headed to the Anchor, I can't hold of him? "
Greg: "He's periscoping so best just message him on Whatsapp to meet us there"