I Really Wish You Wouldn't Do That..

[Syble]

In your opinion, what's the most irritating habit someone can have? 

[Syble]

Chewing gum with their mouth open and smacking with every chew.  

[Patricia]

Very gross, my father-in-law do so all the time, with dentures slipping, made it worse.

[Holly Schmucki]

I agree Syble that is very annoying

[Jozee]

Same as Syble and also spitting.

[Karin M Fichtner]

Chewing tobacco and spitting....the WORST!

[Patricia]

Yes, disgusting. 

[Patricia]

Blame others and lie. Take responsibility for goodness sake.

[officerripley]

When you run into them like at the store or someplace, they act like they're soooo glad to see you & tell you "we have to get together & do lunch or something; give me a call" and you called them several times but they never return your call. And next time you run into them again it's the same "Oh, my goodness, it's soooo good to see you." I don't think some people who do this even realize they're doing it; they don't even remember asking people to call them. They also don't remember anything you tell them of what's going in in your life, even if it's only been a short time since the last time you ran into them. So, even though some may not realize they're doing it, it feels phony when they do it and is irritating (and sometimes hurtful).