Tell tale signs that someone maybe about to straterbate would be:
1. Suddenly appearing to smell something during a guitar solo (which should occur twice in every song)
2. Lighting up a cigarette moments before beginning a song
3. Laughing at an inaudible joke about the audience while looking directly at the audience
Self-gratification via Stratocaster causes an inflated sense of ego and leads to bar star syndrome. The best thing to do when being held captive by an over excited Strat-enthusiast is to just let them finish and by tomorrow no one will know who it was or even care.
"Can you blame him for wanting to straterbate? his band just played 3 Sheryl Crow tunes in a row!"