Dimitri and Svistoslav in “One Stormy Night”

(the clock bats emerge for a daily dose of humour) Hey, Svistoslav, that reminds me... What's the difference between a Yak and a Bison?

I don't know, Dimitri. Tell me, what is the difference between a Yak and a Bison?

You can't wash your hands and face in a Yak! (goes back into the clock laughing to himself)

(returning inside the clock) But you can't wash your hands and face in a Bison, either...