https://www.gamespot.com/articles/you-can-surf-on-fortnite-battle-royale-updates-new/1100-6457815/

Fortnite: Battle Royale got a big new patch today that implements a bunch of changes and brings back an old limited-time game mode. The update also includes a new weapon, the Guided Missile, which has provided an unexpected high point of the new patch.

This is because the Guided Missile moves slow enough to ride on. That's right, you can now surf on one of the giant, slow-moving missiles. This is actually the second weapon that players can ride on; the Pumpkin Launcher is also surf-able. But the Guided Missile is much more fun because the person who launched it can control its flight. Twitch streamer and esports athlete Myth demonstrated missile surfing, and you can see it in action in the video below.