Odd "Not Allowed" Signs in German Museum

This photo is from Miniatur Wunderland in Germany, the word's largest model railway system (the largest collection of small things).  The photo shows two odd "not allowed" signs next to a display window.  The top one has usually been interpreted as "don't throw bottles through the windows".  The bottom one is stranger, and these are some of the guesses posted on social media:

• No gummy worm juggling

• Don't dance in the rain of sausages

• Don't strike this pose if Cheetos are floating in the air

I suppose this might make some sense if snacks and bottled beverages are available in the Wunderland.

-Randy B