From Holden:

Via Bob Cesca we learn that Chimpy has “several” profane nicknames for Chief of Staff Josh Bolten. I suppose just about anything beats “Yosh”.

WALLACE: Does the president have a nickname for you?

BOLTEN: He does. The repeatable one is Yosh.

WALLACE: What’s that mean?

BOLTEN: I think it’s just a corruption of Josh. I’m not exactly sure where it came from.

WALLACE: And is there an unrepeatable one?

BOLTEN: Yes, there are several unrepeatable ones.

WALLACE: Will you tell me about them during the commercial?

BOLTEN: Yes, during the break.