Gloria: Leap day is stupid.
Jay: You're not understanding the logic behind it. A year is actually 365.25 days. Every four years, we gain one day. If we didn't adjust the calendar in, say, 40 years, February would almost be January.
Gloria: That's not my problem, and it's definitely not your problem.

Mitchell: [aside to camera] I totally missed the connection. A month after the most devastating twister to ever hit Cam's hometown, I throw a party based on gay cinema's most famous tornado.

Cameron: Happy Birthday to me.
[aside to camera:]
Cameron: I'm 10!
Mitchell: 40!
Cameron: I was born February 29th, and there have been ten of those in my lifetime, therefore I'm 10! It's fun.
Mitchell: It's so much fun.