Grand Ball Seizure 

When a male's testicals are revealed for the first time in an intimate setting, the size of the balls or scrotum cause a reaction of shock and/or awe by the person viewing them.

Hillary had a grand ball seizure when Joe dropped his pants.

Grand Ball Seizure by Happysun May 18, 2015

Grand Slam 

Term is used to describe the event of when you wake up with major morning wood the size of a Denny's plate full of breakfast awesomeness.

Eric: I woke up on my girlfriend's mom's couch to her whole family staring at my grand slam! Needless to say, they were quite impressed.

Grand Slam by RiddyTX June 17, 2015

Grand Slam 

Having sex with 3 women at the same time and having enough stamina to give all 3 of them an orgasm before you yourself have an orgasm.

Dude I had a grand slam last night!

Grand Slam by Agentzippo July 22, 2015

Grand Cookie 

Old twat

Eat my grand cookie out

Grand Cookie by Cum Swallow September 15, 2016

Grand Theft Auto 

A virtual crime simulator.

Guy: Holy motherfucker is that Grand Theft Auto? Can I play?
Guy 2: Oh hell no boy! I'm about to fuck this ho in my car.

Grand Theft Auto by BadboopBadabeep June 5, 2016

Grand Bay 

Grand Bay is a village in the southeast of Dominica. Grand Bay is roughly 95 feet (29 meters) above sea level with a population of roughly 2,288 people (2010 Census).

Grand Bay is often also considered a farming community, with a primary focus on bananas, root crops and other fruits and vegetables.

You're from which part of Dominica?
South City!
Ahh Grand Bay

Grand Bay by platinumJAH August 24, 2016

Grand Opening 

The deflowering of a girl.

She had her grand opening...with the ribbon, mayor and giant scissors!

Grand Opening by Jay Mott November 13, 2016