Not my proudest parenting moment...

Okay, is it really true that boys are just like this?! It simply can't be! Yesterday Aile and Brenner were playing on my bedroom floor--Brenner was the patient and Aile the doctor. Aile was busy making a potion of medicine, while Brenner was just sprawled flat on the floor, waiting patiently for his dose. Then he suddenly said, "Hey!" Aile and I both looked at him, and he very deliberately lifted both of his legs up straight in the air and let out a long loud toot! On top of that, he looked right at us and started laughing hysterically! This from a boy who is constantly going around saying "Excuse me please!" for every little thing! I have to admit, it took me by surprise so much that my first reaction was to laugh, and of course Aile thought it was hysterically funny. But seriously, where did he learn this?! Why did he even think of it? Can boys truly have this instinctual nature to be so crude?!