The twins do their best to persuade a young contestant to spare them from a short fall into a tank of water in a new clip from the ITV show.
One of the singers tries to sell a trip to a safari park, while the other bigs up a spin on the London Eye.
This week's show also sees host Bradley Walsh look on as Jason Gardiner and Lisa Riley take a plunge.
Keep It In The Family continues on Saturday at 7pm on ITV.
Elsewhere, Jedward gave some surprisingly blunt - and unsurprisingly daft - answers in a Digital Spy '60 Seconds' interview recently.
Watch the interview below: