The following came out of me completely off the top of my head.

B: “..So instead of annoying C at his Cube we could just hold the meeting in GB’s office.”
GB (from office): *sigh* Fine with me, but you’d better bring cocktails…”
Me (Stepping into GB’s office), “Oh, sure. See there was this rooster once…”

Note: of course, since this was all spoken, the pun was much stronger 😉