No fat chicks.
A: "I'm gonna go talk to that girl over there playing video games. She looks lonely."
B: "Better not do that, man."
A: "What? Why not?"
B: "Rule Number One."
Don't post useless definitions on UD. Namely you, chris.
omfg i gotz teh bestest ideea evar! i iz gona postt thaat im coolz undur teh definition "Rule Number One"! geenius!
To Whovians (or anyone who spends way too much time around one): THE DOCTOR LIES.
To everyone else: The first, often primary, rule in a list.
Whovian 1:Rule number one?
Large chorus of Whovians: THE DOCTOR LIES!
Non-Whovian: What the eff?.
In the rules for life, the first one is always this: Don't Get Caught. Other rules may vary by location and other factors, but especially in college when numerous activities of questionable legality are occurring rule number one is don't get caught.
Rule number two is frequently Don't Die, unless not dying would interfere with rule number one.
Jason: Put that pipe away while we're driving through the speed trap, I don't want the cops to see and pull us over.
Sarah: Gotcha, following rule number one.
or, on the outside end of a phone call from jail:
Jason: You broke rule number one!
I am number 1!
Here are the rules: Rule Number One - I'm number 1!