In-Between

Huginn: What have we been doing in the gap across the ears?

Muninn: This and that, this and that...

H: (proudly) No, the right answer is thinking; it is what we do between the ears.

M: Dearest, in between is where I keep track, else what we do is forgotten.

H: (sulking) Must you always take the credit?

M: That is something else we have to keep track of.