I needed to open a box today, but noticed that it read:
“Do not open with a sharp instrument”
So I carefully tuned a Les Paul slightly flat, took a big swing and smacked it as hard as I could with my guitar! Needless to say the result was less than satisfactory.
Fortunately my 3 year old son wasn't around at the time – only because I was following advice I'd read on a medicine bottle – “Keep away from children”.