In a moment of dorm-room spontaneity, TikTok creator Rachelle pulled off a simple yet mind-bending magic trick that’s now been viewed over 3 million times.

Using two red cups she found in her room, one filled with a bit of water, the other empty, she poured the water into the second cup, flipped it over, and voilà: no water spilled.

Rachelle told Newsflare: “I don’t know if I should give away the trick, but I ended up doing it successfully and then posted it. I kind of psyched myself out when I looked inside the cup the first time.”

I used two cups that I found in my room to perform this magic trick. I don’t know if I should give away the trick but I ended up doing it successfully and then posted it. I kind of psyched myself out when I looked inside the cup the first time.