Much tumult and noise from the ladies' toilets, and the library not even open yet.
Salome spotted Lippy heading that way, sneaked in, switched off the light and hid behind the stall door. As Lippy entered and switched on the light Salome jumped out and shouted "Boo!"
Cue hysteria, screams of "I'm a ghostie!" and five minutes' worth of rude posterior noises made with the mouth.
Neither of these ladies is going to be seeing their fortieth birthday again. I don't know what the young ones make of it.