I mean seriously, isn't this method all done.
When home editing software was new this kind of thing was funny.
Now it's completely over done and it seem that people will slap anything together.
It's the least creative or interesting thing done today. If there isn't a real hook or connection to the two different pieces, it's just not funny or interesting.
I used to think putting movie making tools in the hands of "the people" would generate some great stuff and it has, but 95% is utterly lame.