On the first day of school, my roommate announced that she was allergic to water.
She used green tea for everything: drinking, washing up, even bathing.
But as luck would have it, I was allergic to green tea.
I tactfully brought it up with her, but she thought I was picking on her. So at a dorm get-together, she specifically ordered me milk tea containing green tea.
The drink triggered an allergic reaction, and I went into shock and died on the spot.
She just giggled beside me. "I was only curious whether you were really allergic. I didn't think you'd actually die!"
When I opened my eyes again, I was back at the start of the school year, when she was introducing herself.