Melkzelen

I don’t know for 100% sure what melkezelen means exactly but one thing is for sure, it is not something you should do 😀. The internet gives some hints. Although the verb doesn’t exist there is a reference to the noun melkezel, literally translated into English as milk donkey. A melkezel is according to the source an especially stupid donkey. I conclude that melkezelen means to behave very foolishly. And to make sure we won’t forget it has been literally set in stone on a ‘kitchen’ tile.