HELP! All I can remember from this film are two fairies, but they need to get into some sort of 'disco' that can only be entered by fireflies or something.. so they both stick on some sortof light on their behinds and get into the club. But then one of the light falls off the boy (I think!) and they get found out as not to be bugs, but fairies. It's been bugging me for AGES! Thank you!