To grass someone

UK-slang
If a person grasses on someone else, they tell the police or someone in authority about something bad that that person has done

To grass someone
"I'm going to grass you"
"NO DUDE! please don't tell them"

by AlmightyMaster September 11, 2020

cutting someone's grass

When someone attempts to pick up your woman.

"Am I cutting your grass here mate?
"Nah, all's good, we jus' friends."

by Diego September 16, 2003

Cutting someones grass

Getting/flirting with someone who your friend has already gotten with or 'shotgunned'.

Girl 1 admires boy 1
Girl 2 gets with boy 1 (cutting someones grass)

Girl 1 to girl 2: How dare you cut my grass!

by whatababeiam August 15, 2010

Cutting Someone's Grass

When someone comes to a group of people and asks to buy drugs and someone says they have that drug before you and you sell your drugs before they do.

- Does anyone have any pot?
- I do, I'll be right back I have to go get it. (leaves)
- Yo i got some pot buy it off me.
- OK
- Man, you're cutting someone's grass.

by Shawn Maglicic December 28, 2005