Little T the talker

In the past week Little T has made a huge leap in his speech. He's started having conversations. I admit these conversations are on the level of Koko the gorilla and not typical conversation, but they charm me.
Mama mama, up up
I pick up my 23 pound baby. My wrists hurt.
He grins hugely at me.
Mama mama down.
I let him slide down my leg just the way he likes. He laughs and laughs.
Mama mama up up
I pick him up again. My wrists hurt even more.
Mama, down.
We repeat this game several times, even though my wrists are killing me.
Yes, he's learned "Mama will do whatever you want as long as you talk to her."