Holly Willoughby and Phillip Schofield were targeted by Keith Lemon on Celebrity Juice last night as he probed their close friendship...

Holly Willoughby and Phillip Schofield’s long-running friendship is recognised by anyone who watches This Morning.

The hilarious duo are constantly seen in fits of giggles, as well as seen making some very naughty jokes together whilst presenting the daily ITV show.

In fact, they’ve even been questioned by fans as to whether or not they’re secretly an item before… (FYI, they’re DEFINITELY not, and both are happily married to other people).

Read: Holly Willoughby Says Phillip Schofield Is ‘Very Naughty’…

holly willoughby phillip schofield celebrity juice

Holly and Phillip took Keith’s rude gag in jest as they laughed along…

But last night, Keith Lemon jumped on the bandwagon of questioning just how close Holly and Phil really are with one of the rudest Celebrity Juice episodes we’ve ever seen.

As Holly and Phil explained they wereย  gearing up to celebrate ten years of working together, Keith asked if they’d ever got a little more than friendly…

‘No, itย would be likeโ€ฆ my sister’, Phillip replied.

keith lemon

Keith is known for his saucy antics on Celebrity Juice…

However, Keith then turned the heat up a notch by flashing up an outrageously rude image of Holly and Phil’s heads superimposed onto two, erm, adult entertainers’ bodies performing a sex act.

But whilst Holly and Phil themselves took it brilliantly, laughing along with Keith and the other panellists, viewers on Twitter were left shocked by Keith’s explicit prank.

Read: Joe Swash And Stacey Solomon’s Celebrity Juice Appearance Was Confusing…

‘Will never look at @Schofe and @hollywills the same again #celebjuice’, one viewer tweeted.

‘I don’t think I’ll ever look at @Schofe and @hollywills in quite the same way again. #CelebJuice’, said another.

‘Only keith lemon could get away with stuff like this ๐Ÿ˜‚๐Ÿ˜‚๐Ÿ˜‚ @CelebJuice #CelebJuice’, posted a third.

What you DON'T see 20 seconds before we go live ๐Ÿ˜‚๐Ÿ˜‚๐Ÿ˜‚

A photo posted by Phillip Schofield (@schofe) on

And it didn’t stop there. Keith also played a hilarious prank on Holly by re-writing her autocue lines on This Morning to make it sound like she was a little in love with him.

‘I wish he was more than just a friend’, he wrote. ‘I want his children. Heโ€™s the man that makes my ovaries wobble.’