I did the "halfway threaded the pedals in and I'll tighten them later" thing a few months ago. Stood up to catch a light, and Wham! I was on the ground before I knew what hit me. I am glad it was only an old repainted Raleigh with moustache bars, and not something nicer. I limped to a local business, and they let me borrow a 15mm. Been checking all pedals ever since, on everything.,,,,BD

The threads were fine too, amazingly enough!