Join the news democracyWhere your votes decide the Top 100
Everyone loves a good optical illusion and figuring out just how it works.
Whether it's a missing cat poster that mysteriously follows you around or a simple picture of a street, illusions often go viral and get the Internet talking.
However, it's not always possible to replicate them in your own home but a new challenge has people doing just that.
A mind-boggling but relatively easy hand trick first shared in a now-viral video by Twitter user @kay_dera sees her seemingly punch through her own hand without any trouble at all.
Confused? Take a look at the below video and you'll see what I mean. Warning: There is an NSFW soundtrack in the below clip.
At the time of writing the clip has been viewed over 3 million times and people were completely perplexed as to what was going on.
Others though perfected the art of the trick almost instantly.
@kay_dera First try https://t.co/1IJqfv9KV8 — Syameel (@Syameel)
Some people are being very helpful in their explanations.
However, we think this guy's effort is the best that we've seen.
More: 11 optical illusions that will blow your mind