I was sitting with Miss E while she pushed Muck (one of Bob's machines) through a pile of flour.
"This is what makes Muck happy," she said.
Curious, I asked: "What makes E happy?"
"Helping Dad do work in the back yard."
"Bear, what makes you happy?"
"Dad. Work. Yard."
To E, I asked: "...And what makes Daddy happy?"
"Having help in the back yard."
"What makes Mommy happy?"
"Having the kids around."
"What makes Daisy happy?"
"Buddy."
"And what makes Buddy happy?"
"Daisy!"
And there you have it.