Mooinjer veggey is a phrase that means "little people" in the language of Manx, which is spoken on the Isle of Man. This phrase is often used to describe children, but it can also be used to refer to fairies or other mythical beings.
Now, you may be wondering, what are fairies or mythical beings? Well, they are creatures that people used to believe in a long time ago. They are like tiny people who live in the woods or in fairy tales. Sometimes they have magical powers, or they can disappear into thin air.
On the Isle of Man, people have been telling stories about mooinjer veggey for a very long time. They believe that these little people are very mischievous, and they like to play tricks on humans. So, if you ever find yourself on the Isle of Man, keep your eyes peeled for any signs of mooinjer veggey!
So, to sum it up, mooinjer veggey means "little people" in a language from the Isle of Man, and it can refer to children, fairies, or other mythical beings.