The problem of a noisy restaurant.

Bailey: Shame you missed that discussion on bestiality.
Richard: What?
Bailey: I think we talked about... dog, chicken, and horse bestiality.
Richard: [looks worried] What?? Where was I?
Blaise: It was while you three were telling Mathmo jokes.

Note: this is paraphrased, but as close as I can remember to what was actually said.