After discussing the benefits of buying a “Two Together” railcard, Martin told Ben that they could get one together and go on trips to the football and the athletics.
Clearly not happy with the result, Kate, 50, wondered why she wasn’t invited to the party.
“We could get one as well and go to other places,” Martin insisted.
But Ben, 42, felt cheated, telling the expert: “Hang on, are you already doing the dirty on me?”
With an answer for everything, Martin replied: “Well that’s the point of the Two Together cards is that you can have them will different people.”
The sketch ended in happiness for all as Kate noted that it was “a good idea”.
On the same show, Kate choked on Richard Arnold’s sausage live on Good Morning Britain.
The presenter set about recreating a man who feeds his alligators mouth to mouth when she was too enthusiastic and accidentally put too much hot dog in her mouth.
All was well as Ben helped his co-host in her time of need and the team laughed about the unfortunate incident.
Good Morning Britain airs weekdays on ITV from 6am.