grand-slamming

Nailing someone in a Denny's bathroom. Bonus points if hash browns are involved.

Grand-slamming marialuvr01 yesterday was the best.

by forcameron September 19, 2009

Grand Slamwich

The sexually glorious act of being sandwiched between two greasy men in a Denny's bathroom.

Derrick got a Grand Slamwich this morning and couldn't finish his breakfast afterward.

by IronBeagle May 31, 2016

Klamath Grand Slammer

When the second cock doesn’t knock your Copenhagen out of your mouth.

After three Klamath Jammers, he finally managed a Klamath Grand Slammer!

by The Natist June 11, 2021

gran slam

When you take your buddy's granny and do the slamming granny in the fanny on her.

John: "Tom I did the gran slam on your granny last night. I was pretty wasted. Sorry man."

Tom: " That is Fucked up. Now I have to do the San Francisco bird feeder on your mom."

by Papa Smurf blue baller June 11, 2017

The grand slammer

The grand slammer is when you do a line of coke off a girls belly, kiss the girl, take a bong rip, take two syringes full of tequila then make out with a second girl and she slips a ecstasy pill from her mouth to yours. Then you die.

Yo man! Nick just did the grand slammer, his buddies had to take him to the hospital.

by Mickey dog November 20, 2014

Grand slammin

When a girl gives you a blowjob while wearing a beer can baseball helmet and hands you the straws to drink the beer during the act. Bases loaded optional...

It was the bottom of the ninth and I was noticeably depressed because my team was losing. My girl wanted to cheer me up so she loaded two natty lights in her beer helmet and started grand slammin me

by CaseAandJuan October 15, 2018

Grand-Slammer

The act of having sexual intercourse with somebody who makes it taboo, or the act of fuckin your homies older sister 😈

Yooo bro I hit a grand-slammer last night I think I got Sams sister pregnant 🤫

by alabamaslamjammer25 April 3, 2020