 In this game, each team is given a medical condition to act out (which is also displayed to the audience on the laser display board) for the other team to guess.Symptoms have included Barry and Graeme thinking they are a man with two heads, Tim and Pippa Evans thinking that they are the M25, and Barry and Jo Brand thinking they are sound engineers on a BBC period costume drama, so they began mumbling inaudibly (a satirical nod to the controversy over the inaudible dialogue of the BBC's then-recent adaptations of "Jamaica Inn" and "SS-GB").This is by far the best-known "ISIHAC" game.