I got mine in elementary school... My "signature" is in all caps with backwards letters!
To put a concrete number on "tons" - when I was a kid we'd frequently check out 300 books at a time, and the reason the number was 300 was that library cards had a limit of 100 each, and my mom, my dad, and I each had our own library card. Any time I was home sick from school they were all used to check out books for me; and yes, we would go through all 300 of them. Kids' books are pretty short.