A person who is not particularly good at what he/she does.

Often used to describe a persons skill level at what he/she does comparative to the skill level of others.

Can be used in place of pretty much any adjective as well.
“Sam, you’re just one of the doo doo brothers!”

“He’s just jealous because he is just a doo doo brother.”
by totally epic man January 31, 2019
Get the Doo Doo Brother mug.
You’re doo doo brother means when someone is in trouble and you want to tell them they are stupid for doing that.
by bluemusic04 October 9, 2018
Get the You’re doo doo brother mug.