Got a rock on 

Got an erection, i.e woah she gives me a rock on!

erection, hard on, stiffie

Got a rock on by Chris Rocksville February 1, 2005

like a lizard on a rock 

A male small in build or stature fornicating with a female large in size or stature.

Damn that chick was so big. Hittin it would make me look like a lizard on a rock.

like a lizard on a rock by Gfunk1210 November 8, 2017

Dumber than a rock on a bad day 

Dumber than a rock on a bad day, which would be dumber on the dumb scale compared to "Dumber than a rock".

Friend 1: Your dumber than a rock!
Friend 2: Your dumber than a rock on a bad day!
Friend 1: Shit.

Dumber than a rock on a bad day by jeffboi42 August 20, 2020

Heart of Stone on the Rock 

The world's worst cocktail: tap water poured over a solitary ice cube.

Can also refer to someone in a position of authority not giving their mates any breaks

JJ: hey did you hear Bungle is now running the Balham Tup?
Pat: sweet, did he hook you up with free booze?
JJ: no way man, he'd even charge me for a Heart of Stone on the Rock!

Heart of Stone on the Rock by Persil May 30, 2006

Rock on boy summer

A summer consisting of boys rocking on, not to rock music but just saying rock on at any given moment. Often said in a high pitch tone with extended syllables.

Boy 1: “wow great shot!”

Boy 2: “roooock ooonnn”

Boy 1: “rock oooonnn”

Boy 3: “roooooccckkk ooonnn”

Boy 4: “roooockk onnn it’s a rock on boy summer”

Rock on boy summer by DT MIKE June 23, 2021

Hop on Deep Rock Galactic 

It's a way to suggest somebody to join your union to take back the production means to the hands of the people.

Hey comrade, let's Hop on Deep Rock Galactic!

Hop on Deep Rock Galactic by NereaCassian March 6, 2023

rock on 

A phrase rockers use to greet each other, say goodbye, or just say when someting is cool.

Whats, up, dude? Rock on. (Usually used with the "Rock on" symbol.)

Later, dude. Rock on!

Awesome! Rock on!

rock on by adrian o'riley February 13, 2004