Let's make a deal

Todd proves that he isn't as gullible as you might think:

Daddy and Todd were having fun and got into a pseudo-discussions about languages, mostly about Todd picking up his Chinese again when he returns to Oma and Opa's house for winter break, Daddy's wish to learn more languages, and Todd's curiosity about German.

So Daddy tried to strike his son a deal:
"You teach me Chinese and I'll teach you German."

Todd wasn't about to be fooled, however:
"But... you don't speak German!!"