Celebrities including John Mayer and Max Holloway have been challenging each other to the Bottle Cap Challenge, which involves kicking the top off a bottle.

Internet challenges can be entertaining, absurd, dangerous, and tools for positive change. What they have in common is how they combine elements of active participation and online sharing.

Across the globe, people are participating in the “vacuum challenge,” which involves vacuum sealing oneself in a plastic bag.

This new TikTok challenge has people sliding backward to the song “Reverse” by Vic Mensa.

The #BouncyEggChallenge is a popular meme where someone appears to transform a regular egg into a bouncy one. However, many videos suggest that doing so is actually impossible.

The Shell-On Challenge involves biting into food that is still in its shell, peel, or wrapping. There is some debate about whether this is a harmless meme or dangerous epidemic.

The #FeelingCute Challenge has social media users sharing cute selfies and explanations of something they might do later.

People are pranking their friends and family members by tricking them into holding a cup of water on the ceiling with a broom and then walking away.

Celebrate the start of April with a look back at some of the most hilarious recent memes.

A dance move meme challenge has people spinning around slowly as if they were in a microwave.

The #TrashTag Challenge has people around the globe cleaning up the environment and sharing “Before” and “After” pictures to show-off their efforts.

An internet challenge known as The Cheese Challenge involves throwing a slice of cheese at someone’s face and filming their reaction.