Why didnt the rooster cross the road ?

He was chicken .

 What do you call a rooster that crosses the road , rolls around in the dirt then crosses back ?

A dirty double crosser . 

They can send a man to the moon but they cant make a decent caulking gun ,,, why

They dont need a caulking gun on the moon .

Why do hen's lay eggs ?

If they droped them they would brake.