When I first saw the description, I felt for sure it would be a joke about how mushrooms getting you high. I mean, I just saw "high" and "mushroom" in the same sentence! It actually was something different. That was a nice surprise, but it still wasn't good. It was just too short.
There should have been more ways he would get the mushroom. I guess I thought this would be like those cartoons where he tries over and over. Why didn't he just jump off Luigi's head? Too predictable? This was just forgettable.