Lactdose
You hand someone a dairy-filled snack and then you laugh like a lunatic when they start spitting and screaming.
My brother gave me a muffin and didn't know it had yogurt. I spat it out and screamed.
My friend gave me a smoothie and didn't know it had milk. I spat it out and screamed.
My dad gave me a sandwich and didn't know it had cheese. I spat it out and screamed.