Grass puppy

A Grass puppy is a cow. So when people say that Cows are just ugly say no they are grass puppys

Alex- "Have you seen my Grass puppy yet?"
Sandra-"WTH is a Grass puppy?"
Alex- "A cow, duh"

Grass Surfing

Using a sledge to surf down hills

I'm so excited. I'm going grass surfing this weekend.

Grass Stain

1. The level above a pot head or stoner. One who smokes unhuman, almost extraterrestrial amounts of marijuana.

2. A way to explain one's state of mind when extremely high.

1. Yo Fred you're a straight up grass stain.

2. I'm so grass stained right now I feel like I have to mow my hair.

ass is grass

Yes, it does imply the addressee's doom, but for a slightly different etymology, see the quote below:

Sergeant to buck private: "Your ass is grass and I'm the mower."

Emo Grass

Grass that literally cuts itself!!!

Han: Hey Paul look your grass cut itself isnt that cool.
Paul: Yeah its called Emo Grass its really cool i wake up and my lawns cut perfect.

cut the grass

An expression used to describe an event that made a large negative impact, with other smaller events often leading up to it.

When she told me I had to wear a woolly hat during sex, it really cut the grass and I told her to fuck off.

They put me on hold for 45 minutes only to tell me I had to contact a different department. That just cut the grass and I decided to change suppliers.

Snake in the grass

A term for an undercover cop.

We got us a snake in the grass.