A do-do usually refers to an immature penis, but it can and is used to also, as a pejorative, to identify or describe the shrinking or always very small penis of an older or elderly white man.
Come on, Bobby, stand next to the toilet like Daddy and aim your do-do, right in the middle, try to hit the toilet paper.
I am sorry honey, Grandma is too tired to play with Grandpa's do-do, you play with it.
I am sorry honey, Grandma is too tired to play with Grandpa's do-do, you play with it.
by luvmfat March 3, 2019

To go to sleep. Used in French Louisiana and New Orleans. Pronounced "doh-doh," as opposed to doo-doo, which means feces.
by eViL pOp TaRt August 1, 2011

by David from Kingsbury November 7, 2003

Basically the short hand formed of "What are you Doing?" Can be used as a text, in person, on the phone, on Instant Messaging, basically anyway you want.
by nilosuperstar September 20, 2011

Harry: Whatcha doing tonight?
Ron: You!
Harry: Yay!!!
Julie: Do, Ray, Me!
Cap'n: My name isn't Ray... but I'll do you!
Ron: You!
Harry: Yay!!!
Julie: Do, Ray, Me!
Cap'n: My name isn't Ray... but I'll do you!
by Gregorina December 29, 2007

An early OS (operating system), that was very simple. Programs were booted after the C:\ command line. DOS was later borrowed by Microsoft, which wouldn't exist anymore if it weren't for DOS. DOS was used for classic games, such as Doom, Wolfenstein, and Quake. DOS remains in existance and is used for gaming, without having to deal with Windows errors. A new version of DOS is hard to find, but with the most current and currently most popular version being FreeDOS, DOS users are still welcome to play their old games.
by Lynx_User58 July 19, 2005

Over stereotypical black guy, "Yo whadup do?"
Over stereotypical white guy, "Why I'm swell. How are you today?"
Over stereotypical white guy, "Why I'm swell. How are you today?"
by mickey l brown January 30, 2008
