"Everyone is the enemy until proven otherwise."
"Keep your opinion to yourself until someone asks for it. In the meantime, shut the hell up and keep a low profile."
(this one half-works - for some reason, I always seem to stand out in a crowd)
"Being humble means holding the belief that you're ugly without self-deprecation."
"There's no such thing as safe sex. There is such a thing as safeR sex."
"Don't waste your time and energy arguing with Stupid People(tm). They are NEVER worth the effort."
"Bros before hoes. Unless she's been your girlfriend for a considerable amount of time. Then she comes first in most cases."
"Never EVER enter into a relationship with a Carla Espinosa unless you're willing to surrender your testicles. If she starts acting like a Carla Espinosa, talk to her about it. If she persists, dump the *****."
"Sex isn't worth it if she's offering it merely as a gift or a reward. It's only worth it if the desire is in both of you."
"If a girl is of the belief that you need to do something for her on Valentines Day, dump her. Valentines Day means absolutely nothing, especially if you're the kind of couple that shows their love for one another every day."
"Never betray your best friend, or any friend, for sex with a girl, no matter who that girl is."