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".
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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.
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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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