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Leaving a large group of people with your significant other, saying you are going to "warm up the car" but are really engaging in some sort of sexual activity with them. Much less suspicious when said in the winter, but is extremely fishy in the summer.
Boy whispers to girlfriend: "Hey baby do you wanna go warm up the car?"
Girlfriend whispers back: "I thought you'd never ask."

"Hey we'll be back in a few minutes, it's cold outside so we're gonna warm up the car."

A couple leaves to 'warm up the car', and one person says to the rest of the group: "Wait, why are they warming up the car? It's the middle of summer!"
by Love Rider January 19, 2010
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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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