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1. A Headboard Concussion is when a very promiscuous woman starts to lose the ability to think due to her head repeatedly hitting the headboard during rough sex.
2. A concussion gotten from a woman hitting her head on the headboard during sex.
1. That girl was so slutty she goes to the hospital once a month for a headboard concussion.

2. On my honeymoon I gave my wife a headboard concussion. The marriage didnt go well.
by Anonymous58332 June 25, 2011
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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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