when you tie someone to the floor, then poop on their chest and head
jane did a harley donkey to david and it was smelly!
by Mr. Dude June 22, 2004
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The most effective machine at turning gas into noise without the side effect of horsepower.
"You hear how loud that Harley Davidson was?"

"So? It's slow, heavy, and can't turn or brake"
by Sondebeech April 15, 2010
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A pipe fashioned out of varying standards of glass used to enable one, to heat, swirl and smoke rocks freely and at ease with the use of a perpetually near empty Bic Lighter
Steve " Don't know if I will make it out tonight Franky, I'm really tired and worn out..."
Franky " Mate, jump on the Glass Harley and go for a quick swirl around the lounge room and you will be keen as mustard in no time..."
by JImi Recardo February 3, 2015
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Noun--The act of riding on the back of a harley davidson motorcycle with a biker dude and calmly reaching your arm around his torso in order to jerk him off, while feeling the vibrations of the motorcycle on the bottom of your sack.
"Oh wow dude, look at that biker!! You want to give him a harley handjob!!!"
by Harleyhandy June 12, 2009
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Any chick who thinks she is bad because she rides on the back of a harley
by Weasel67 March 16, 2016
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A character from homestuck that gets fused with a dog and is the time witch.
Did you know Jade Harley has a dog dick?
by fallguyguy November 4, 2020
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A sexual act wherein one partner eats the booty of the other, while simultaneously making motorcycle noises, and on occasion, steering the booty side-to-side through turns.
A: How was your weekend dude?
B: Great! I did the Harley Davasson with my partner.

A: Dude, that's sick!
B: Yeah, man! I was totally like,"Aaaghrrrghhaaaaaugh"!
by Dirty Case January 25, 2016
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