“Your a*s is grass”: Meaning & origin + 4 example sentences

It can be said that idioms by their very nature, tend to break logical rules or grammar. For the idioms that break the rule of grammar, these phrases are accepted by usage simply because, it is something that has always being said. Phrases like “Your a*s is grass” don’t make any grammatical sense, however, it has grown in its meaning. Now, let’s discover what “Your a*s is grass” really means.

What does “Your a*s is grass” mean?

“Your a*s is grass” actually is a shortened version of an original expression “Your a*s is grass and I am the lawnmower!”. The long and short form are used as a threat from one person to another for being wronged or insulted in one way or another. The comparison of grass and the lawnmower means that whoever says “Your a*s is grass” is implying that they will take action against you, this action could be literal or figuratively. Nevertheless, it should be seen as a strong threat that signifies, they are angry at you or whatever it is you did.

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Where does “Your a*s is grass” originate from?

While there are numerous wrong etymologies that state “Your a*s is grass” originates from the fact that when someone dies their body decomposes to become fertiliser for grass, hence someone’s a*s being grass. The origin of “Your a*s is grass” is the shorthand of the expression “Your a*s is grass and I’m the lawn mower”. The full statement when said to a person means that the individual making the statement believes that they have complete domination or control over the person the expression is directed to. In these instances, it could mean a boss to a subordinate, a superior officer to a junior one or a parent to a child.

4 examples of how to use “Your a*s is grass” in a sentence

Using “Your a*s is grass” to give someone a final warning

In this instance, you aren’t actually doing anything to them but warning them of the repercussions of their actions. For instance, if you have told someone to do or not do something a couple times, you could use “Your a*s is grass” to let them know there will be consequences for their actions.

The example below is the interaction between an employer and a worker

Employer: “You really have to stop coming in late. I’ve had it up to here with you.”

Worker: “Boss, I can explain.”

Employer: “I don’t want to hear it. Come late again this week and your a*s is grass!”

Using “Your a*s is grass” to threaten someone”

This instance is used when you want to imply that someone is going down in the near future. It is used to mean that your fate is inevitable. In this instance, “Your a*s is grass” is just the first half of the sentence, with “and I’m going to move it” being the rejoinder.

“You have messed up my plans for the last time. Your a*s is grass”


“Don’t even think about interfering with the deal, cos your a*s is grass”

Using “Your a*s is grass” in a superior to subordinate situation

In this instance, the relationship between the two people or groups of people involved is that of a superior to a subordinate. For example:

Army Drill Sergeant to new troops:

“Move it, move it scumbags! Didn’t you hear what I said Peters? I said move and that means move NOW. So, move or your a*s is grass and I’m the lawn mower. Do you understand the words coming out of my mouth Peters?”

Peters: Sir, yes, sir!!”

Using “Your a*s is grass” to refer to yourself or something related to you

In this instance, it is not you saying “Your a*s is grass” to someone else or having them say “Your a*s is grass” to you. Rather, it is you referring to yourself for being in a situation where you know you are in trouble. For example, if you are playing a video game and you just lost your last “life” you could say something like:

“My a*s is grass” to show that your game character is dead.

You could also use it to signify the importance of something. For instance, if you have a test or assignment that makes a great percent of your grade you could highlight its importance to you by using the “Your a*s is grass” expression to yourself. For example:

“I really need to pass this test. Mr Jones said it was 50% of our entire grade. I can’t afford to fail, or my a*s is grass”

Another instance of this would be in a professional environment, either talking to a colleague or to yourself

“I need to knock this project outta the park or else my a*s is grass.”