* How much time things will take
* How much time I have available
* How funny I am
* How much something will affect me emotionally
* How tall I am
* How pregnant ladies are
* How much hugging is appropriate
* How people will take the silly thoughts that come out of my mouth
* How clear my thoughts are
* How near places are
* How much or how little of a social life I want
* How happy I am
Things I am bad at estimating
Ironically, he didn't see it coming.