She's Mad, I Tell Ya!

This one happened in Tesco's while buying a birthday cake for my brother.
"We need to buy candles for your brothers cake."
"Why?"
"Cos it's not a cake if it aint got candles on."
"Eh?"
"If it aint got candles on, then it's not a cake!"
"Of course it's still a cake, it's just a cake that aint got any fucking candles on it!"
"EXACTLY!!"
"?!"