(s)ex dream 

An extremely awkward form of sex dream where the dream-partner in question is an ex-lover.

Unlike normal sex dreams involving your current partner, or a random friend/acquaintance, (s)ex dreams are disturbing because you KNOW what the sex with that person is like (and so the dream is more realistic), but have valid reasons why you are no longer with them.

General feelings upon waking include: feeling dirty and ashamed, horniness, guilt, nausea and confusion. These feelings are amplified if you found yourself enjoying the experience.

Even more awkward when you are in bed with your current partner and you have a (s)ex dream.

I had a (s)ex dream about my old girlfriend, Claire, but I woke up feeling really guilty because I was in bed with my wife.

(s)ex dream by Kaname May 1, 2010

controlling ex boyfriend 

A previous boyfriend who obsesses over a past companion and has regular inquiring contact with the ex companion.

The controlling ex boyfriend asks where you are, where you've been, why you cant come over and/or hang out, why you cant stay the night, who you've been hanging out with. The controlling ex boyfriend might not believe you when you tell him anything...he's always suspicious that you're not being honest even when you're being completely or brutally honest. He may demand you spend the night and when you tell him you cannot (for whatever reason....its truly none of the controlling ex boyfriend's business), no matter what you tell him....he suspects you're lying and have other plans....most likely hookup plans with someone else.

Controlling ex boyfriend: where are you?

The victim boyfriend or girlfriend: im at work...i picked up a double shift today.

Controlling ex boyfriend: really? because i asked your coworker and she said you didnt work until later today

The victim boyfriend or girlfriend: well,......like i said i picked up a double shift

Controlling ex boyfriend: all i've ever asked from you is the truth

The victim boyfriend or girlfriend: im at work...sorry you think im elsewhere

Controlling ex boyfriend: (calls the victim boyfriend's work just to make sure he/she is actually at work)
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controlling ex boyfriend by Finally Free! April 11, 2010

Xenos ex Machina 

A plot device whereby a seemingly inextricable problem is suddenly and abruptly solved with the contrived and unexpected intervention of an extraterrestrial being.

Hey look, Superman saved the day by flying around the Earth really fast and turning back time! Thank goodness for Xenos ex Machina!

Xenos ex Machina by Royston Lodge September 13, 2011

My Ex-Girlfriend 

My ex- girlfriend means the past girlfriend.
Its the girl with whom we were in love in the past but not now.
Normally we don't see our ex- girlfriend in our future plans and she has to be eliminated out of our life

Example of My ex-girlfriend is here

Kristen
Stewart is the ex-girlfriend of Robert Pattinson

My Ex-Girlfriend by Kaypee October 22, 2013

Fed Ex 

A shipping service, just like USPS or UPS.

Did you take those packages to Fed Ex to be sent yet?

Fed Ex by Dan Barnett November 18, 2006

psycho-ex 

An ex that you hate so much you call her psychotic.
Generally, a psycho-ex hasn't let go of the relationship and is in denial that you have broken up.

Whoa dude, I just saw my psycho-ex, better hang low for awhile!

psycho-ex by Spacebar June 1, 2006

stupid slut that dates my ex boyfriend 

That common "slut" (or whore) that will break the girl code and go off limits by dating your once lover. Even if you claim to be "Over that doushe bag" its still never recommended to date a girl's ex, if you do, prepare to be bitch slaped.

Cara: What the fuck?! Look at that home wrecker of a stupid slut that dates my ex boyfriend! What the hell does she think she's doing with him?

Bridget: I don't know... but let's beat the shit out of her till she breaks up with him. :)

stupid slut that dates my ex boyfriend by heartloves_you June 11, 2009