Nick: I don't think it's fair that women have an excuse once a month to act irrationally angry when the rest of us have to keep it together all the time.
Jess: You're irrationally angry 365 days a year, Nick.
Nick: What are you talking about?
[flashback to Nick struggling with a door:]
Nick: I will push if I want to push! Come on! I hate doors!
[present:]
Nick: Really? Well, that's just your personal opinion, 'cause I don't have anger issues. You guys think I have anger issues?
Schmidt: Well, I mean, I wouldn't exactly call it an issue. An issue is something you can fix.
Winston: Been that way since I can remember.
[flashback to Young Nick at a lemonade stand:]
Young Nick: This is some watered-down nonsense. You're some no-good shysters!