Laddums
You get someone to say 'huh' or 'what' and then you yell 'laddums' like you're a rockstar
He said 'huh' and I said 'laddums' and he said I was annoying.
She said 'what' and I said 'laddums' and she gave me a weird look.
They both said 'what' and I said 'laddums' and I got in trouble.