I guess 'promise' is a very strong word to use, God I remember the oath I took at Brownie's as a kid, dunno if you've heard of the Brownies (like a Scout thing), where you had to promise to do God knows what on my initiation. I remember my Dad and brother being there and smirking in the back ground as I had to walk around a pixie pond three times during it and it was a mirror on the floor, they didn't half piss themselves laughing afterwards with my Dad asking what all that crap was about. I think I broke most of the rules anyway.