This is a weird one. Some fine soul out there has mashed the theme song of beloved children's show Thomas & Friends with "Break Stuff," the 1999 single from Limp Bizkit's Significant Other. Why? We don't know.
We do know, however, that the result is internet gold. In addition to being a hilarious juxtaposition of two entirely disparate sounds, the mash-up also shows the true colors of Limp Bizkit. The blend of the two songs conjures up the image of Fred Durst as a furious toddler, throwing a train-smashing temper tantrum. So, essentially, Fred Durst. Listen to the masterpiece above. Note: It's a Limp Bizkit song, so the lyrics are still not safe for younger listeners.
If you're interested in more Thomas & Friends mash-ups (yes, there are more), check out the entire subreddit dedicated to them at /r/ThomasTheDankEngine.
Source: Jozz Hands YouTube Channel