Once when I heard the Berryman's doing "A chat" they told a story about one of the first times they performed it. As I recall it, they were performing live for some radio program. They told the MC that they had this song, but they were not sure if they could do it for the radio. The MC replied to the effect "Just so long as it doesn't have the F-Word"
We all laughed; I don't think they actually told us if they did it.