Ever sat deep in thought waiting for the stop sign to turn green?

No, but my home town installed a flashing red border on the stop signs. So distracting at first I nearly ran them they were so hypnotic.

No but I have unintentionally sat at one as if it was a red light and got honked at

No.
I'll admit I've sometimes gone off into a daydream. :/
But for me, there's not enough time at a stoplight to get into deep or serious thought.

I've done odd shit. You okay?

Yes, sure...