Cats do what they want

grumpy cat

I had a cat once. He was a stray that hung around my house. He got friendly started coming in the house. Then all of a sudden he left. We didn't even get to name him.

can I have a collar like that but just with "Please leave me alone."

Hmm... That cat clearly fashioned that collar after running away from home. Well played, feline... Well played.

and what if when the cat wants to cuddle with me?