Shelby's Law states that all women are selfish whores or liars.
It should be noted that some women can be whores and not liars, such as prostitutes, and vise versa, with Nuns.
Bruce: "My girlfriend just got drunk and cheated on me with some douchebag and won't even admit it to me.
Alan: "Shelby's law, dude. Shelby's law."