I brewed my own beer when I was a kid.
My dad knew but turned a blind eye, cos he did the same when he was a kid, and also I think he thought I was learning useful stuff in the process.
I didn't actually like the end-product very much, but my friends liked it, and my dad 'found' a bottle and said it was quite nice too.
EDIT: come to think of it, he actually 'found' quite a few bottles - my stash shrank quite dramatically over time
I think he drank more of it than I did
I have a baby daughter now, maybe I should start leaving rubber pipes and 15 galleon tubs around her playpen and hope nature takes its course...