I bought, for $30, a kind of crappy Lotus (early Taiwan production) that the guy said he had ridden and even raced on in HS. He was not a big guy, maybe my size, 5' 7", but must have been quite small when he first rode the bike because it was something like a 47cm frame. In order to deal with his growth, someone had stuck in an extra-long seatpost, and evidently not having confidence in that, they drilled a hole through the seat tube, with a screw into the seatpost.

I guess in this thread that barely qualifies as 'bonehead.' IIRC the seatpost was even the right diameter.