A sex act involving a male and two females.

A man has intercourse whilst holding the legs of a woman from behind, who is simultaneously performing oral sex on another woman below.

Derivative of the wheelbarrow.
"Why Geoffrey, that was a wild french lawnmower we had with Beryl after bowls."
by stupocalypto October 24, 2011
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when someone believes their "ass is grass" because of a certain someone, that person is then known to have a lawnmower.
alex - if pete finds out i ragged his girlf before him, my ass is grass, and he's got a lawnmower, ya dig?

brian - straight up nigger!
by aslan. July 24, 2008
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The act of licking the pubic hairs of another persons anal cavity in a fast, circular motion. It works much better if the person receiving the Indonesian Lawnmower has a very hairy asshole.
D00d, my asshole is so hairy. I'm gonna tell that ho Rachel to give me the Indonesian Lawnmower, and then I'm gonna fart in her mouth.
by Nate of Fate. February 26, 2009
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When you use your lawnmower and everyone else starts mowing their lawn too. Applies for most equipment such as hedge trimmers and weed whackers.
There he goes again, Steve starting up the lawnmower effect.
by a_fucking_sloth_lizard September 4, 2017
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The sexual act in which the girl tugs on the man's ball bag so furiously as if she was lost at sea and it's the only motor that will take her home.. often resulting in some form of testicular or scrotal damage or destruction.
YO! LaFawnduh gave me such a good devil's lawnmower last night I had to go to the ER for emergency surgery. Shit was nice!
by bobo bumpkins August 3, 2019
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