Who gets the last word in?

Stop that! Stop that! You're not going into a song while I'm here. Now listen, lad. In twenty minutes, you're getting married to a girl whose father owns the biggest tracts of open land in Britain.
 
I don't imaging herds of cats:) But it made me think of this line:
Well, what are you doing creeping around a cow shed at two o'clock in the morning? That doesn't sound very wise to me.