Smart Alec, Quick Wit

Darius is being a typical four year old.
Curious as they come, and darned quick at putting things together. Scary.
He's even learned how to lie...though he doesn't do it very well, and he tells on himself before I discover that he's lying, he knows the concept.
Lastnight, we dropped Chance off up in town on our way to language class, and Darius kept asking why this, and why that...I told him he was gonna make me go bonkers if he kept asking why. He replied with "why....Y is a letter mom"
God, that was the beginning of a fit of giggles that wouldn't stop.
D hates it when you laugh at something he says, even if you explain that he made a funny.