sharpen my pencil 

to masturbate to full extent and make your pencil (penis) sharp (erect)

Once I saw that hot ass chica, I started to sharpen my pencil, asked her to come in the car, and then it was all good times.

sharpen my pencil by Eric Cartmanez May 9, 2008

sharpen the fields at night

To masturbate, specifically during night time.

Pauly:" That's Killian, our roommate, but we like to call him the one handed gardener."
Joanie: "Why ?"
Pauly: "Beause we hear him sharpen the fields at night."

sharpen the fields at night by ChaosBearer August 1, 2015

Sharpen The Sword 

The act of trying to get smarter by having sex with intelligent individuals.

I have a physics test tomorrow that I didn't study for, so I guess I'll sharpen the sword with Steven Hawking.

Sharpen The Sword by Diddle Jack October 3, 2016

sharpen your spear

To jack off or fuck.

Are you going to sharpen your spear?

sharpen your spear by Deep blue 2012 September 3, 2009

sharpen your crayon 

(1.) To masturbate into the back of your 60-pack crayola crayon box.

I'm going to sharpen your crayon...ONE HANDED!

sharpen your crayon by CLAIREDEANDESIREE August 15, 2007

sharpen up 

to become more aggressive.

Get that mimosa out of your hand, and sharpen up!

sharpen up by frank June 21, 2004

Sharpen the Battle Oar for the Regatta

Code used by closeted gay men to communicate their intent on attending a gay sex orgy;

Sharpen= lubricate

Battle Oar= one's penis

Regatta= public place, usually a highway rest stop or secluded park bench, where homosexual men go to have unprotected sex with multiple anonymous partners

Mike: Hey Dave, what are you up to tonight?

Dave: I'm so stressed. I'm ready to sharpen the battle oar for the regatta. (wink)

Mike: Sounds good. I'll see you there. (gently taps foot)

Sharpen the Battle Oar for the Regatta by Crewman April 29, 2009