About 6 months ago I took off in the face of a sigmet for turb. There
was no weather to make me think there would be turb and I had enough
outs that I just went. As I taxied out I was "rewarned" about the
sigment by ground, tower, approach, center, approach, tower, etc. That
was probably the smoothest flight I can remember. I put in a PIREP for
smooth air and by the time I got home the sigmet was canceled.

-Robert