sneaky vandersloot

Inserting your finger or fingers into a woman's vagina and then proceeding to put said finger(s) into her ear. Essentially a wet willy with her own vaginal fluid.

Billy: You know how I was fingering Vanessa the other day?
Bobby: Yeah! What happened?
Billy: Well, she was about to cum and I gave her the ol' sneaky vandersloot instead. She slapped me pretty hard and now she won't talk to me.
Bobby: Huzzah!

sneaky vandersloot by smithee985 September 18, 2010

Sneaky Geraint 

Abandon friends for your own lift home; without telling anybody.

Don't tell anyone, but we're going for a Sneaky Geraint.

Sneaky Geraint by LouisNJacko April 23, 2011

Sneakajack

The action of covertly masturbating with others around. Most commonly perpetrated by individuals taking part in a point based masturbation game. The more unaware individuals around when sneakajacking the more points received by the sneakajacker.

"The secret service failed to thwart my sneakajack while I was sitting inside the podium while the president gave his last speech about the war."

Sneakajack by SheriffKLap August 31, 2013

sneaky one

a sneaky partake in sexual activity

"Who's up for a sneaky one in the corner?"
"I'll be there."

sneaky one by bilaaal January 11, 2014

sneaky grandpa 

Before masturbation, soak your hand in warm water until it becomes all wrinkly and gross-like.

Trust me. Once the sneaky grandpa takes a hold of your life, porn will never be the same.

sneaky grandpa by Bernanski May 17, 2014

sneaky pickle 

When the woman does not feel the penis insert.

"Dude I heard Bob's dick is so small he gave his girlfriend the sneaky pickle"

-Agent P

sneaky pickle by David Bumsted April 17, 2014

Sneaky Hitler 

When you fart under the duvet covers and pull it over your girlfriend/boyfriends head.

Dude I pulled a sneaky hitler on my girlfriend last night. It was funny as hell!

Sneaky Hitler by SneakyHitler November 8, 2016