With apologies to Dr. Sheldon Cooper, we offer a vexillological query as today's mentalfloss.com Brain Game Free-for-all Friday challenge. Hoist one and enjoy:

Which U.S. state's flag depicts a
thin blue stripe on its outer edge,
and what is this edge called?

Here is the ANSWER.

Which U.S. state's flag depicts a thin blue stripe on its outer edge, and what is this edge called?

ANSWER:  It's the flag of TENNESSEE - see here. The outer edge is also known as the FLY.

Thanks for playing, and have a great weekend!