Dougie ends up in Harry's pants (thanks to some camera trickery rather than actual underwear swapping) and the pair struggle to realise what everybody is laughing about.
Cricket icon Freddie Flintoff and David Hasselhoff are the other stars who join team captains Holly Willoughby and Fearne Cotton and show regular Rufus Hound this week. Celeb Juice airs tonight (March 1) at 10pm on ITV2.
> 'Celebrity Juice' becomes ITV2's most watched show ever
Watch the clip below: