Tell em, "I bet I can do something you can't do with your guitar!" "Oh yeah? What?" Then flop your speaker cab on it's side, make their girlfriend (or them if it's a gal) sit on your cab, crank your amp, drop your E string's tuner down nice and low, and pluck ONE note, and say, "My G string can hit her G spot!" HOWAAAAAAAAAAAAAAAAAAAARD!!! Am I wrong? Am I wrong?