When something that you were doing suddenly goes bad or becomes overly complicated.
Everything was going great, then mike screwed up and it went all runny brown!
A two hour job took us all day.
by chiefbean May 7, 2009
Get the runny brown mug.
runny brown is when a lactose intolerant person drinks milk and shits in there pants
jessica came to dinner last night but she had to leave because she had runny brown
by ur ,mom May 3, 2020
Get the runny brown mug.