A kid calls up his mom from his college and asks her for some money, hed run out.

Mom says, Sure, sweetie. Mom will send you some money. And by the way, you left your calculus book here when you visited last week, do you want me to send that up too?

Uhh, oh yeah, OK. responds the kid.

So Mom wrapped the book up, along with 2 checks, in a package and went to the post office to mail it.

When she gets back, Dad asks, Well how much did you give the boy this time?

Mom says, Oh, I wrote 2 checks, one for $20, and the other for $1000.

$1,020!!! yells Dad, Are you crazy???

Dont worry hon, says Mom, I taped the $20 check to the cover of his book, but I put the $1,000 one somewhere between the pages in chapter 19!