I used to convince people that by attaching a paper clip to a rubber band, you could make it go far further
However, I'd discovered (painfully) that you couldn't fire it from your thumb if you did this, as it'd usually rocket quite hard straight into your nail. It seems that I wasn't the only one who hadn't considered this could happen, as everyone I suggested this to ended up with very sore fingers.

Very funny to watch, very painful to have it happen to you.
( Agnostic Antichrist Baltimora, Tue 18 Oct 2011, 13:05, Reply)