It stopped being funny after 40 seconds and really, are these kind of April Fools jokes that funny anyway?
"Herp-a-derp, I'm going to say stuff that I normally wouldn't when reviewing a movie that obviously doesn't exist."
Really, what would have been better and actually a bit more funny was to actually review the Super Mario Brothers movie from the eighties. That would have had potential humor.
Seriously, it seems like when Bob tries too hard to be funny, he fails miserably, but when he really doesn't, he can make some good laughs.