[jla]

I was 10 years old before I found out that swingandamiss was not one word.

You mean "when" you found out, unless you want us to guess how old you were, which then could be any age older than 10.

I took it to mean he was 10 yrs old up when he realized that swingandamiss wasn't one word.
Now, he may have still been 10 after he found out, but that'd depend on when his birthday was.

[zencycler]

I was 10 years old before I found out who won the 2002 Senate race in Louisiana.