Frog's had to go to the doctor's first thing. Lippy, who took the call, has told everybody that he's down at the clinic with a funny rash. Frog, in turn, is telling everyone that he's been prescribed viagara (he says it doesn't help with the rash but it makes it easier to scratch). The pity is that T.Aldous hadn't noticed that Frog wasn't in: we were looking forward to answering the inevitable query with the response "he's at the doctor's with an itchy dick."
Ah well, perhaps next time.