flat mouths 

Cheap sneakers possibly bought at K-Mart or Kash-n-Karry. The have flat soles, no cushion, and make a slapping sound when you run.

Look at kingfresh wearing his flat mouths! What an anathema!

flat mouths by f3drock May 29, 2007

Dingo Flatmouth 

An inaudible saying that nobody understands. It is used in place of common words such as book.

Teacher: "Today in class we will be reading the book Hamlet."
Student: "I aint funna read dat dingo flatmouth."

Dingo Flatmouth by Jonashquaka December 8, 2010