Grandadio 

A blow job from a girl, specifically a girl called Fran. Usually involves hard graft from the recipient prior to said 'grandadio' - proof that they are under the thumb of this 'Fran' character.

Friend 1: Hey, you wanna grab some beers?

Friend 2: Sorry, got to work hard for this 'grandadio'

Grandadio by Your Priest April 21, 2014

Grandad Erector 

A sight so sexually stimulatin that it could raise the dead.

"Look at that stripper shooting ping-pong balls from her hairy scar, that is a grandad erector."

Grandad Erector by Jtron 3000 October 3, 2003

grandaddy purps 

Grandaddy Purps is a purple marijuana strain hailing from the west coast. It is an extremely potent strain and is often used my medicinal users. Smoke responsibly!!!

"that grandaddy purps got tears in my eyes"

grandaddy purps by LVilleBlazin July 29, 2006

granddog 

The adorable puppy your son or daughter just adopted in lieu of a human baby... in other words, as close to grandkids as you're going to get for now.

Check out this adorable sweater I got for my granddog! I'm taking it to him when I visit my son next month.

granddog by kabulykos August 17, 2010

Grandiosity

1: characterized by affectation of grandeur or splendor or by absurd exaggeration.
2: impressive because of uncommon largeness, scope, effect, or grandeur.

Cody's thinks grandiosity is a compliment, but it will eventually lead to bipolar mania.

Grandiosity by hungdaddy April 23, 2009

Grandad dribbles 

"Grandad dribbles" is the term used to describe when one does not shake their penis a sufficient amount of times after urinating, resulting in urine dribbling from the penis and down the individual's leg.

1. Yo man I just had the worst grandad dribbles!
2. You should of shaken more, bro.

Grandad dribbles by daveWORST February 20, 2011

Mentula Grandiosus Syndrome 

A condition manifest in certain adult males, identified by the following symptoms:

1. A penis worn down to the size of an acorn or smaller, from continuous self-massage.

2. The delusion that the size of said penis is far above average, and possessed only by highly motivated, hard working, intelligent individuals that thrive in a dynamic and creative work setting.

Travis and Michael, both suffering from Mentula Grandiosus Syndrome, did not realize that being characterized as "the biggest dicks on the block" was not a compliment.

Mentula Grandiosus Syndrome by Third-Degree Crispy August 22, 2010