I am a mug. - You're a mug. You're the kind of person who thinks being nic

You're a mug. You're the kind of person who thinks being nice means letting people take advantage of you.

I'm a mug because I let my brother take my last slice of pizza without even asking.

My teacher called me a mug because I let my class laugh at me for my bad joke.

I'm a mug because I let my crush ignore me for a month.