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.
by luvmfat March 3, 2019
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You know, it's one of those times when its really dark in the room and you THINK you're aiming for the vigina but it goes in somewhere else. If she doesn't like it up the booty hole try this approach. :)
Person A: My girlfriend is HOT but she doesn't like it in the booty hole.
Person B: Say man, do the do do.
Person A: Ahh snap yo, its flawless!
Person B: Works every time :)
by Craig Dunn July 17, 2005
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To go to sleep. Used in French Louisiana and New Orleans. Pronounced "doh-doh," as opposed to doo-doo, which means feces.
I am tired, so I think I will make do-do.
by eViL pOp TaRt May 22, 2011
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A social reformer, knave who thinks everyone else's shit stinks but not their own. So convinced their cause/reform is needed they can't even tell their own shit stinks too.
That do-do-gooder, politician, has no clue about how to get shit done.
by 2B+ March 25, 2014
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the opening guitar to Say it Ain't So by Weezer.
person 1: "do you know the song that goes 'do-da do, do dododo, do da-do'

person 2: "oh yeah its Say it Ain't So by Weezer...are you a virgin or some shi-"
by whatssteez July 6, 2021
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the vocal callings of guys describing this guys penis one time, the way it was so big it swayed
yo man, did you see jacks thing man?" "word dawg, da doing doing doing....
by snickle-fritts November 13, 2010
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