How does Niclas melt butter? By screaming at it. Seen in Stomachless Sticky Cake and Crucified Carrot Cake.
The end of Pessimal Pie has Niclas stop eating the food and go for the mayonnaise again. Isak and Niklas try to get him to stop, but after the third mouthful he flips the long since annihilated table to signify they're finally putting the poor thing down for good.