Libby

To Libby (verb): to out someone's undercover role, as Lewis "Scooter" Libby (and others) did to CIA agent Valerie Plame.
Her: Yes, I'm sort of a secret agent.
Him: Well, if you keep telling people it's not much of a secret is it?
Her: Oh, you're right! I need to work on my stealth. Sorry.
Him: Don't apologize to me - I'm not the one who Libbyed you.
by My name is Cos August 06, 2007
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retrosex

A hookup or other episode of sex (such as the start of a new involvement) between people who dated or hooked up way back when, lost contact with each other for years, and became reacquainted.

See: http://thephoenix.com/Boston/Life/75527-Are-you-a-retrosexual/
She's not dating anyone right now, but she's had retrosex with two guys she hasn't seen since high school who she found on Facebook recently.
by my name is Cos January 26, 2009
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cosominate

To sleep together in the same bed or similar space. Does not imply having sex. It's what "sleep together" would've meant if we hadn't turned it into a slang idiom meaning "to have sex".
"The kids used to cosominate until we got them separate beds when they were 6 and 8."

"You can crash here if you don't mind cosominating. I don't have a spare mattress."

"We just started having sex last week, but we've been cosominating for months."
by my name is Cos October 07, 2007
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pre-sequitur

Like a non-sequitur, a pre-sequitur doesn't follow what immediately preceded it, but instead relates to something that came much earlier. It is a sudden or jarring break in the chronology, but it does follow... when you remember what it refers to.
Jen: Why did you leave Los Angeles?
Keith: Well... have you ever lived there?
Jen: I visited once, for a week. I liked the street performers on the boardwalk...
Keith: Oh, the boardwalk is where I got this red scarf!
Jen: I was trying to knit a scarf just like that last year but I never finished.
Keith: Where do you get yarn around here?
Jen: There's a good store just a few blocks from here, wanna come see?

... ten minutes later ...

Jen: Huh, do you smell Indian food?
Keith: Hmm, not really... but now I'm in the mood to get some Indian Food.
Jen: Sure, let's!
Keith: It was the pollution, that's why.
Jen: pollution?
Keith: Yeah, I wanted somewhere with real air, and LA wasn't it!
Jen: Oh, why you left Los Angeles
by my name is Cos November 06, 2007
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extra arm

When two people are cuddling in bed, three arms have somewhere to be but the fourth arm is in the way. It's the extra arm.
"I've always wondered exactly what to do with that extra arm. I've tried curling it up between us, putting it above my head under the pillow, straightening it between us and the only thing that seems to work is just putting it behind me."
-- metafilter posting
by my name is Cos October 07, 2007
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treyferrific

So good, and so not kosher!

Bacon jerky.

Prosciutto-mozzarella sandwiches.
Wow, your shrimp salad is wonderful and treyferrific!
by my name is Cos November 15, 2009
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megan

More extreme version of meatatarian (alternate spelling: meagan).

A vegetarian doesn't eat meat; a vegan eats only fruits and vegetables.
On the opposite side of the spectrum, a meatarian wants meat in every meal; a meagan not only wants meat in every meal, but avoids the veggies altogether.
We have a really hard time having dinner together, because I'm a vegetarian and she's megan, so she doesn't like anything I want to eat!
by my name is Cos May 24, 2008
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