Can anyone explain the joke?

Which organ is the meme referring to? And why? Because the picture is referencing muscles, I think?

The girl (acc: iAmJordi) just pulled the phone out of a drawer and used it. Nothing else 😭

Some people in the comments are is asking about the cold and small part but nobody explains it. I don’t get it.

Edit: title is wrong. It is cold and small part

A character in the book describes this shirt as “very funny” but I guess I’m too dense to get it.

In the Monty Python sketch 'The Funniest Joke In The World', the Germans try to make their own joke that goes like this:

"Zer ver zwei peanuts, valking down der Straße, und von vas assaulted... peanut."

Is this an actual joke with wordplay or just nonsense?? I have been thinking about this for literally weeks and cannot discern a meaning 😭 Thank you!

Is the doctor stalking the lady because she has big ears? My family has been trying to figure this out and none of us get it.

Saw it on fb. But too soon for comments maybe?