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1.
When someone fucks up at work so bad that it results in downtime for the company. Ideal in plants/factories.
Well, looks like someone pulled a Bagby again. We were down for 6 fuckin hours before our line was running again.
by jmack6699 April 09, 2013
 
2.
noun. A big bitch who has saggin ass titties that look like tea bags. Most commonly old women who cuss out their grandchildren and smoke newports. A Bagby can most definely be mistaken for Norbit.
Mrs. Jackson: IF YOU DONT GIT CHO BLACK ASS OFF MY LAWN!!!!

Jabari: Shut up!....old Bagby lookin ass bitch!!

Mrs. Jackson: Oh I got yo bagby alright nigga!!!

(runs for like 5 seconds and is desperately out of breath.)
by nkjbnkln January 23, 2011
 
3.
1. (adj.) Below normal standards, cheap,
2. (adj.) Jury-rigged, improvised, or home-made (usually with extremely cheap or sub-standard components)
3. (adj.) Without value
Your car is so bagby its held together by duct tape and breaks down all the time.

by Mr. Bagby July 10, 2008