Cowboy slang term for a Barrel Racing Horse. Usually a crazy, overhyped horse that will run you over, because he's so burnt out on barrel racing. Usually a $500 horse she spends $5k a month on in supplements, gimmicky "fixes" and chiropractor.
Oh God, here comes Brittany on her Rocket Donkey. Y'all better get out of the way!
by Mostly_feral August 6, 2020
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It's like a donkey punch, but instead of injaculating in her anus after hitting her in the back of the head, you stick your arm in her anus more than 4 times.
Matt: Rocket donkey punch that shit man!

Andrew: What's that?

Matt: Smack her in the back of the head and stick your arm in her ass 4 times!!

Andrew: Ahhh!!
by Matthew X February 22, 2010
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a sexual position in which a donkey is used, usually consisting of two people male and female in which the couple has sexual intercourse while riding a donkey
ORIGIN- the color of the mans testicles may turn blue when the donkey runs and to the man it will feel like a rocket lifting off
The other day my girlfriend and i tried the blue rocket donkey to spice things up.
by wankiiit March 2, 2012
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