Used in polite circles when you are out on the lash need to go home for a poo. Best used with embellishment.
Brad: Sorry lads but I have got to go home and let the dogs out.
Angelina: I thought so, they have been barking all afternoon.
Brad: Yeah, if I don't go now there will be horrible mess.
To party with no inhibitions; i.e. unleash the beast. The phrase was originally made popular by the worst song of all time, "who let the dogs out?", but now is used mockingly.
Since the world is supposedly going to end tomorrow, I am going to let the dogs out tonight.
To become overly intoxicated to the point where you just run around wild.
Aaron: What should we do tonight?
Jon: I don't know you want to let the dogs out?
Aaron: I'm down!
An attempt to find a lot of partners for sexual intercourse, and let them have it.
Lets go out with Marsha and her friend and let the dogs out later!
Telling a girl to expose her breasts.
When you want to get a party started, then let the dogs out.
To make a bad call. To become ridiculous. To exposoe oneself in a bad way. To go out without wearing underwear, with intent to reveal. To be unshaved.
OMG did you see those pics Samantha posted? Yeah, she really let the dogs out on that one!