Purposley masturbating so furiously to the point of such exhaustion that you vomit all over your own erect dick at the point of orgasm.
Dude, i totally walked in on jamie puking all over his own dick.
ahh, pulling a sailors mast i see, I'm impressed, i assumed he was impotent
ahh, pulling a sailors mast i see, I'm impressed, i assumed he was impotent
by Dickjob McHawkins May 26, 2010

To tie belts to both front doors of a car. Then while speeding, climbing out through the passenger window, grabbing the belts and laying on the hood at high speeds. As seen in the movie Grindhouse.
by Saint921 April 14, 2007

When your getting there, but are yet to really put up the tent and let everyone know what you are about
Yogi: Wow I can't believe you still haven't pitched a tent yet
Shamus: Well I've been at Half Mast for about an hour now, so it should be here anytime now
Cordon: Have you been stuffing your pants?
Bleu: Na I've just been sailing at half mast for about a few minutes now
Dave (to himself): Wow who knew that flying half mast in public would be so easy to get away with.
Lady (casually looking at dave): Wow that guy is at half mast, someone should really tell him to chill out
Shamus: Well I've been at Half Mast for about an hour now, so it should be here anytime now
Cordon: Have you been stuffing your pants?
Bleu: Na I've just been sailing at half mast for about a few minutes now
Dave (to himself): Wow who knew that flying half mast in public would be so easy to get away with.
Lady (casually looking at dave): Wow that guy is at half mast, someone should really tell him to chill out
by J Dog12 March 27, 2009

When the male penis has not yet achieved full erection ie: Full Mast
Usually due to moderate or unsuccessful arousal or drunkeness.
Sometimes called a "Semi"
Usually due to moderate or unsuccessful arousal or drunkeness.
Sometimes called a "Semi"
"At Half Mast Warren walked past the girls, showing his gratitude for their beauty"
"After many beers Douglas was unable to get beyond Half Mast, Gemme was going to get a dud root tonight...if any!"
"After many beers Douglas was unable to get beyond Half Mast, Gemme was going to get a dud root tonight...if any!"
by Ben L 64 November 10, 2008

The art of masterbating whilst having a poo at the same time. Preferably one should reach climax at the same time as they push out their poo.
But it is also poo masting if one poo's before they reach climax, or if they reach climax before they poo.
But it is also poo masting if one poo's before they reach climax, or if they reach climax before they poo.
by Poo star February 14, 2008

When you have half of a boner. Kind of like a chub. You cannot control it. It is just there. Big and thick.
by My turbin is dirty April 16, 2012

A school located in Key Biscayne Florida. Houses some of the illest craziest thugs in the entire planet.
"yo son, betta watch yah self or i'ma get mah boy from mast academy to fuck you up and then fuck yo bitch. straight up"
by edd0 August 29, 2003
