2 more definitions
a butthole that looks like puckered lips when someone just ate sour candy.
"That cat has a sourmouth."
by Don'L October 02, 2005
A person that cannot carry on a conversation with the use of one or more curse words in every scentence.
Sara was known for her intellect. But she was also known for her Sour Mouth.
by Bee J. Ho April 16, 2015