Maybe this one is just me but...

If you are at the end of the TWW and you don't like the temp you just got, you keep taking it in the hope that it'll change to reflect that you may, in fact, be pregnant!! LOL! There were some days where I'd take it 300 times in the hope the first 299 were wrong LOL!

This one is probably just for the ACers...
When you first start AC you are obsessive about making sure that you are presentable 'down there', and touch up before each appointment... after a few months, you get to the stage where you remember you haven't shaved in a week just as you're getting undressed in the room!!!!