Ok, Joe 

Directed at someone for doing or saying something stupid or retarded.

Yerta: I just ran into a glass wall
Danny: Ok, Joe

Ok, Joe by Yertle July 25, 2008

OK Joe 

Used when one person no longer wishes to continue a conversation with another.

We were talking and then she said "Ok Joe" and walked away.

OK Joe by Dfid January 4, 2021