I disagree often, and never politely.

"I'm sorry, but could you kindly go to hell"

If you're in a particularly bad mood....

Did your brain melt?

Wow, absolutely everything you said was wrong. I'm not even sure how you managed that.

Did you come up with that yourself, or did you get it from Yahoo answers?

Nope.

Come on, you can do better than that.

You should be open to the idea that you don't know what you're talking about.

Try again.

@Ashkin umm, I am a passive and a calm person by nature. The people and clients I have to deal with are amateurs who hold bachelor's and master's degree in CS. In my small city, all these people I have encountered can't even comprehend my suggestions which are meant for their benefit. If I teach them something, they have to take it negatively.

I humbly believe their is no limit to learning or a specific age when we stop doing so. I teach myself almost everything I deal with and I enjoy it thoroughly with idea of becoming more wiser and learned.

My way of being impolite is merely an overly professional and direct email or IM which target them for instant gratification whether or not they like it, but ultimately they understand that their are ways of doing something in better manner.

Don't take me wrong, I am not hot-headed or short tempered. I am overly professional in terms of communication. Guess, I should used an emoji in my rant to make it look more sarcastic and casual?

Good luck with making friends. Mean people die alone and are not missed. 😐