If you're thinking, "He had to do that on purpose" then you're right. It was on purpose. However, that doesn't make it any less funny. 

No matter where you go in life or what you do, your haters are going to try their best to knock you off your game. Or in this case, your jet ski. 

And while the intrusive thoughts tell us that filming ourselves smashing into our friends at high speeds in rental boating equipment is hilarious, it's not worth paying full price to replace a broken jet ski. Or accidentally killing your friend over.