Twitch — a nervous tic (a neurotic bug, as if calm bugs weren’t enough of a problem).
tWitch — Stephen “tWitch” Boss, freestyle hiphop dancer, featured in several movies including the Stomp and Step on Up film; married to dancer Allison Holker with whom he hosts Disney’s Fairytale Weddings; runner up on So You Think You Can Dance (hope it’s back on soon!), and has appeared on Ellen Degeneres’ TV shows.