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(v.) to break in, as one would a virgin (chiefly anal).
D'you wanna dog out my five point oh (5.0)? -Ali in 'Bully'
dog out by anycon November 16, 2004
To cancel plans with little or no notice ahead of time.

See also: bail on, ghosted
q: "Did you have fun at your concert this weekend with Stressica?"
a: "Nah, she decided to dog out on me again."
Dog out by Not Gafgarion October 31, 2022

get that dog out the meathouse 

It means that your underwear and pants have recessed into the butt crack and it has formed a noticeable line in said clothing, viewable by all.
Dude 1: Damn dude, get that dog out the meathouse!
Dude 2: Well quit looking.

Who let the dog out? 

Another way of saying, who farted?
I was sitting in the front rows of the cinema when I heard someone down the back yell, "Who let the dog out?"

"And then people ran screaming from the back row, as if a bomb had gone off!"

Let The Dog Out

When receiving a handjob, the act of stroking the penis slowly and gently then stroking it quickly with great speed causing a vibrating effect, that ends with the head extending over the foreskin and finally ejaculating all over the hand. Very similar to letting a dog outside then scratching its belly quickly and it's mouth slobbering all over your hand. This is not limited to a having partner spot you, as you can in fact do this by yourself in the act of masturbation. However, this sexual act cannot be performed on a circumsized penis.
1. Hector asked Monica if she could give him a blowjob but instead he had to settle for less when Monica chose to let the dog out on Hector instead. 2. Stefan could not get a girl to let the dog out on him so he chose to do it himself.
Let The Dog Out by Heeyuktah January 2, 2010

ate my dog out 

ate my dog out by daddy oh November 10, 2016