To see what they had learnt from filming CBBC show Jedward's Big Adventure, in which they guide tourists through the UK's top visitor destinations, DS probed the X Factor twins for fascinating facts about extraordinary places they have visited during their career - such as Cowell's dressing room.
"In Simon Cowell's dressing room he had a bulldog statue, he had those things you do press-ups on... leather walls and he has a picture of me and Edward on the wall with him [that] says, 'Best friends since 2009'," they revealed.
Jedward also claimed that the Celebrity Big Brother house - which they entered in 2011 - is "made of cardboard" and "the water tastes like vanilla".
Jedward in the Celebrity Big Brother house
Asked who they would like to join them on another Big Adventure, Jedward put together a rather mixed group containing Digital Spy, Katy Perry, Victoria Beckham, Lorraine Kelly and Miley Cyrus, who they described as "the girl version of [us]" with her new quiffed hairdo.
Miley Cyrus sporting a 'Jedward-inspired look'
"There must be some stylist out there who's giving advice to Pink, advice to Ke$ha, advice to Miley Cyrus, advice to Adam Lambert, because they all have Jedward-inspired looks," the pair said.
Jedward's Big Adventure airs weekdays at 4.30pm until Friday, January 11. Previous episodes are available now on BBC iPlayer.
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