How to Argue With a Pre-School-Aged Child (And Lose) #29

P=Parent
C=Child

(Talking about the importance of having rules)
C: My rule is that if there's a squirrel...no, a small deer. If there's a small deer running to its mama you have to go the opposite way. Go the other way so you don't crash. 
P: That's a rule?
C: Yeah, you have to go that way.
P: Okay, so the rule is that if a small deer is running across the road to its mama you have to go that way?  That's your rule?
C: Yeah.
P: That's a good rule.