Had to add some sillies from when my DS was between 3-4 (i am one of those moms who keeps journals)
..picture DS going into the bathroom and things getting very quiet then a loud shout goes through the house, "Mommy, my intestines are now empty!"
...another bathroom comment when he was 3 - sitting with daddy in the bathroom and he very proudly looks up at Daddy and said, "Houston, we have a problem...it's stuck." I still remember my husband coming out of the bathroom about falling on the floor laughing.
..laying in bed, we have the best talks at night..out of the blue he asks, "Mommy, why is my ceiling flat when our roof is triangle shaped?"