To fall with the door into the house
Translation: Met de deur in huis vallen
Meaning: To get straight to the point

As if an angel is peeing on your tongue
Translation: Alsof er een engeltje over je tong piest
Meaning: Someone who is really enjoying their meal

Now the monkey comes out of the sleeve
Translation: Nu komt de aap uit de mouw
Meaning: Similar to the English expression “to let the cat out of the bag”; the moment that a hidden motive or the truth behind something is revealed.

Het regent scheermessen
It’s raining razors!
Het regent telegraafdraden
It’s raining telegraph wires!
Het regent kopjes en schoteltjes
It’s raining cups and saucers!

Toilet glasses
Translation: Toiletbril (same in German: Klobrille)
Meaning: Toilet seat