It basically means your a dickhead or a bitch or just a rude word if you can't swear because someone is next to you
What I have on my desk next to me, as of writing, that I use to store pencils and pens. It’s also something that Urban Dictionary is advertising below this definition, as well as all others on the website.
A mug can also be used to store a beverage, usually coffee.
A slang word used to replace a noun; typically used to refer to an object of sorts.
1: "Check out my new wallet"
2: "That mug is nice"