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When you decide to have sex with your lover, who is unfortunately (for both) menstruating. Also, she has been plugged with a tampon, strings all a'danglin'. During intercourse, the tampon appears to slide out, much like the horn of a unicorn.
A potentially sedate weekend in Daylesford may have been caused by an awkward round of "Fucking the Unicorn"...

....Neeeeiiighhhh!
by Not High Enough In A Hammock August 18, 2012
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Jul 12 Word of the Day
The horrible moment when you realise that you have accidentally done something very slightly wrong which has very bad (usually embarassing) implications for you. This is typically the moment of realisation that you just sent a dirty text message to a close member of family, typically your mother, rather than the intended recipient.
Message: "i'm free this afternoon so come over and fuck me senseless, my parents will be out all day"
Recipient: Mum
Message Sent
- Onosecond occurs here -
by Jimmed September 26, 2006
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