n. Someone who locks their friends out of their room, whether because they are busy doing work or otherwise.

Ever since he had to write all those papers for art history, Devin has really turned into a diddle-doo.
by (Kolya) May 9, 2008
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Someone with a small bent cock.
It is often frowned upon in society.
I’m so sad it got stuck half way. I wish I was not a diddle doo
Don’t go for him he has a diddle doo
by Chick Magnet6996 June 17, 2020
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Someone who has a small bent cock.
Often frowned upon in society.
Omg worst time ever. Danny stopped after 2 inches he couldn’t get the third in because of the angle. I hate diddle doos
by Chick Magnet6996 June 17, 2020
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When someone is bored in a discord chat room and wants to talk to people but doesn't know how to get their attention.
Random person: FOO DIDDLE DOO ;-;
Some other dude: yo wtf??
Same random person: oh hai how ya doin? owo
by LieutenantPlayz101 May 29, 2018
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