Two-sided clipless on the commuter and Look pedals on the weekend bike.

When I first started riding with toe clips and straps (in the mid-80s) I pulled up to a stop sign and had the straps too tight (I tightened them while riding). Couldn't get either foot free. You can guess what happened.
Naturally there were a few cars behind me. Seems that is always the case. I didn't bother to see who was laughing. Just got up and took off.