It really bugs me if

The verb bug fits well with your emotional reaction:

2 informal Annoy or bother (someone):
_ODO

Imagine how you feel if a swarm of gnats gathers around your head, and starts crawling in your ears, eyes, nose and mouth. The bugs are bugging you in much the same way that man is bugging you with his irritating distractions while you are trying to watch the movie. You can swat the gnats with impunity, but you will need to be a little more gracious to your rude theater-mate.

Pester would be another verb to describe his behavior.

Crack:

1.1 Break or cause to break open or apart:
_ODO

Crack open:

[for something brittle] to break or split open.
The egg cracked open and a chick worked its way out.
_{McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.}