so im playing the thumb, loving it by the way, but suddenly i feel a weird sting on my forearm on the top of the frets. so i feel it down, no burrs, then i start playing again theni feel it again, only this time on my right arm on the bridge. i hold it there and again i feel it. im being electrocuted by the bass! thought it was funny then i realized its not and somthings wrong. then i stand up to show my dad and its not doing it any more. whats going on here?