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1. ducktail
Verb: smearing shit one one's walls and/or bedding after engaging with vigorous anal sex with an unsuspecting partner.
The drummer and guitarist of that band had a list of girls they both wanted to ducktail. They're about halfway through.

I totally ducktailed her after the show at Bard last night!
2. ducktail
An asian girl with really long pubic hair. Their hair is usually straight so when untrimmed, it looks like a duck's tail.
You don't want none of that girl, she is a ducktail fo sho
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