Fun German metaphorical phrases

Hello! I find germans have quite interesting and funny metaphorical phrases, and I wanted to share a log on that. Right now I only have a couple, but I will be expanding.

"Ich bin blau." "Du bist blau."

Literally: "I am blue." "You are blue"

Meaning: "I am drunk." "You are drunk"

(I just find really funny that a color is related to that kind of situation).

"Ich glaub ich spinne."

Literally: "I think I spider."

Meaning: "I think I am going crazy."

(Imagine calling yourself a spider when you are stressed out).

"das/es läppert sich"

Meaning: It accumulates.

I honestly couldn't find an English translation for this one, but it means something like: "all these little bits that were once manageable just added up". I am still researching it, so feel free to comment on its meaning and example!

"Jain!"

Meaning: yes and no.

This is not metaphorical, but hell I like it. It remembers me of Schrödinger in a funny way. However, it has nothing to do with physics and a cat being both dead and alive. It has to do with situations being in a grey area. Like:

+"do you drink soda" 

-"Jain! Only at parties"

Hallo , sehr gut! any more?