We did an AM radio kit, and it said to connect the antenna to "building ground".
Well, a certain 11 year old boy didn't know WTH 'ground' was. We touched it to various pieces of metal with no results. Ultimately, we decided that ground was something in an outlet.
We didn't know which one was ground, though.....
Did you know that if you hook up the antenna of an AM radio to 115v potential, it lets the magic smoke out!