The latest internet obsession is yet another challenge, and like every other internet challenge the rules are pretty simple. You accept the challenge, record yourself doing it, post it online and then challenge someone else. Except the “lemon face challenge” involves you to bite into a sour lemon and record your reaction. Easy, right? Some people’s reactions say otherwise.

This challenge has been set up by Aubreigh’s Army, an organisation that supports the fight against Diffuse Intrinsic Pontine Glioma, or DIPG, a terminal form of brain cancer, reports The Washington Post. The point is not only to do the challenge but to also donate money towards the organisation.

Good Morning Britain’s reporter Alex Beresford took the challenge and posted his reaction (above). Just as the challenge was announced the internet blew up with several posts and videos of diverse reactions.