Not a single word, but a name. When I came to choosing a screen name, Jimmy Stewart’s voice got stuck in my head, calling, “C K Dexter Haaaaaven, Oh, C K Dexter Haaaaven.” Wouldn’t get out. So I thought it was a sign from on high.
I used to sneak up behind my mother and say “Bolero” and she’d have Ravel in her head the whole rest of the day. Dirty trick. (And usually had a bounceback effect on me…like it’s having right now! Damn!)