Pet Peeves?

 We all have our pet peeves. Something that just irritates the heck out of us. I, personally, hate people that talk at the movies. I've been waiting to see this movie for a long time and here the people a few seats over talk constantly while the movie is showing. 

For you, maybe it's noisy eaters, screaming children in restaurants, bad breath, etc. Please do share your pet peeve/s :)