I've had that happen!
  It's actually funny...there was this scene in 
Sailor Moon where this little boy pulls his pants 
down and shout..."A BIG ELEPHANT!" or something 
like that. And his mother grabs him by the nexk & 
drags him off. 
  Anyway I even saved the screen capture and 
thought I had no hope of finding this cel. Then 
low & behold there it is in a cel lot on YJ!! And 
the strangest thing is the cel I ended up with 
wasn't just a cel from that sequence it was THE 
EXACT cel that I had wanted!!