"My favourite thing was a bunch of people made a giant sign that said ‘How am I going to be an octopus about this?’ and held it up during Pompeii at all the right times and it distracted me enough to sing “octopus” instead by accident."
A moonbow is a rainbow caused by moonlight. It’s a bit fainter than an actual rainbow. Moonbows are rare because moonlight is not very bright. A bright full moon is needed & it must be raining opposite the moon. The sky must be dark and the moon must be less than 42º high. (Source) (You may also like: 360 degree rainbows)