I love to sing to TJ and sometimes I leave the last word out and let him fill it in. I tried it the other day with a made-up song and this is what we came up with:
Mama: TJ, TJ, I love...
TJ: You.
Mama: Every day, yes it's...
TJ: True.
Mama: From your head to your...
TJ: Nose.
Mama: I love you right down to your...
TJ: Belly.