Silly old gaffer

Actual conversation that actually just happened:

*Ringring* *Ringring*

TIM: Hello? 

LADY:We're ringing to talk about your gaffe supply. 

TIM: Gaffe? I make them all the time. 

 LADY: *Laughter* I've never heard that joke before. 

 TIM: Really? Surely everyone makes it. 

 LADY: So anyway, we're ringing to ask about your gaffe line. 

TIM: Gaffe line? A line delivering gaffes to our property? What are you talking about? 

(I can see the gaffe in my minds eye at this point, running along the pipe, a greyly rubbery flubbery substance, coming out a gaffe tap).

BARON: I think they're talking about gas. 

TIM: OH! (Pause) (To lady on phone) Are you talking about gas? 

Well.... that was something of a gaffe.