"Don't touch my nuts" is literally
translated from Spanish as "No me toques los cojones".
You can use this sentence when someone is annoying you or when someone takes your piss off of you.
This is a
little bit rude in Spain, so please use it only in a friendly
environment.
Pau: "Hi Dave, the API is
not working again!"
Dave: "Yes, it's
working on my VM"
Pau: "DTMN,
come over and take a look to it ..."
(1 min after)
Dave: "Ok, fixed, try again please"