1 - you must weigh in first thing in the morning, naked, and preferably after potty-time. (I'm pretty sure I'm not alone on THAT one, though!)
2 - I weigh myself both before AND after a shower, in case I had some really heavy dirt on me.

3 - even though I barely process the number it shows, I get on that darn scale EVERY TIME I leave the bathroom, even if I just went in there to peek in the mirror or something.
4 - my favorite dumb superstition, which I only just put into words last night - I have to look at the wall while I'm on the scale, because if I look down at the numbers too soon, the weight of my head hanging down will cause a higher number to appear.


Anybody else willing to share some scale quirks you might have?