Archive for September 4th, 2008

Thursday Morning Riddle

Thursday, September 4th, 2008

I’m instructions that lead to no end when complied;
Found on ties when they’re tying, and shoes when they’re tied;
To invert in a plane or amusement park ride;
And the circle of people that’s on the inside.

Who am I?

UPDATE: Riddle solved by Brian. See comments for answer.