1.You called a Mosty when they are having a blonde moment or a dumb session. If someone is always confused or find things hard to understand they are called 'Mosty'.
2. A other name for a bum chum dog poo fairy
Person One: "Ummm... What's one plus one???"
Personal Two: " Oh My Goodness!! Did you really just ask that?? "
Person One: " Yeah "
Person Two: " You are such a Mosty!! it's two, you bum chum dog poo fairy"
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