Third Day Syndrome

The inexorable tendancy for serious injury due to novel activity familiarity and progressive exposure.

Goin' skiing for the first time, eh?
Yeah, I'm totally stoked!
Taking lessons, are you?
Sure am! I've got an Olympic instructor lined up.
***1 week later***
(leg in cast) So, How'd it go?
Well, everything was totally fine. Got a TON of confidence and really started the hang of it...
Then what happened?
Well, I got good enough to be over-confident on the big slopes.
Ahhh, yes. Third Day Syndrome strikes again!