I still can't stand the jump physics in New Super Marisa Land. Jump straight up and into a box and watch it push you to the side for no reason other than 'because'. Graze your head against something and I get the wonderful surprise of finding that my bunny ears suddenly will not respond. Come down from a jump, try to jump again, and plow directly into whatever is waiting for me on the ground because the jump didn't register at the right moment. Not to mention all the times I've managed to jump directly in between two enemies with only one block space in between them.
Also, I don't know why, but I get pissed at the wrong things in general. I could probably get my arm chopped off and be like "oh, fiddlesticks. I guess learning how to play the piano is right out now." Meanwhile, I waste 5 minutes in New Super Marisa Land dying a few times on a boss and I sound like I'm the administrator for a stubbed toe convention.