Living with Mr. Doodlebug

I was in the family room rocking baby Doodle to get him to calm down enough to put him in his crib for his afternoon nap when Mr. Doodlebug came in having just left the bathroom. He was laughing quite hard and said, "Do you want to hear a joke I just made up?"
"Sure."
"Knock, knock"
"Who's there?"
"Peon"
"Peon who?"

ha ha ha

He felt the need to repeat the joke while we were eating dinner tonight. Right after we cleaned our plates Mr. Doodlebug unconsciously pounded the table a few times with his fist, burped, then said excuse me. Then he proudly said, "You didn't know I had burped did you?"
"Yes, I did."
"How?"
"You brought a lot of attention to yourself when you pounded the table before you belched."
He looked enlightened, like he didn't know he had hit the table at all. But then he thought about it and agreed, that yes he had in fact acted like baby Doodle does when he wants more food. Earlier in the evening Mr. D had pounded his chest like Tarzan to help himself burp. The burp that ensued was loud and disgusting. Baby Doodle stared at him in disbelief. I hope he's not picking up these gestures from his father.