You walk into kitchen because you are thirsty, you see a milk on the dining table, you take it and drink it, you find a strange why it tastes different from normal milk,the milk is like stale and a bit thick

Your stepbrother comes into the kitchen to see you drink it, he chuckled Mischievously Leon:'you think it's milk huh..?it's not milk, but do you like it?" he smirk, and approach you