Amy: Do you need anything else?
Sheldon: You know exactly what I need.
Amy: Fine. [sings and plays autoharp] Soft kitty, warm kitty, little ball of fur. Happy kitty, sleepy kitty, purr, purr, purr.
Sheldon: That's nice. Now in German.
Amy: [sings and plays autoharp] Weiches Kätzchen, warmes Kätzchen, das nie und nimmer murrt. Liebes Kätzchen, müdes Kätzchen, schnurrt, schnurrt, schnurrt.
Sheldon: Great. Now Mandarin.
Amy: [sings and plays autoharp] Ruǎnmiánmián de xiǎo māomī máoróngrōng, kuàilè kēshuì qīngqiǎo māomī, gūlǔ gūlǔ gūlǔ.
Sheldon: Now Navajo.