The 24-year-old supermodel was a guest along with Tracee Ellis Ross, 47, while Harry, 25, was hosting in the absence of James Corden, 41 on Tuesday.
Harry and Kendall who were first romantically linked in 2014 and sparks were still flying as they made VERY sexual comments and ate cod sperm and a bull’s penis.
‘Just swallow it!’ Kendall Jenner and Harry Styles made VERY sexual comments in a flirty Spill Your Guts Or Fill Your Guts interview as they tucked into cod sperm and a bull’s penis
‘To spit or to swallow, that is the question,’ said a cheeky Harry, before tucking into some cod sperm
They had the option of either answering a question or eating things like bug trifle, jellyfish, giant water scorpion, 1,000-year-old eggnog and cow blood and pork tongue jelly.
Harry picked out the eggnog for his ‘longtime friend’ Kendall and then asked her to rank her siblings from best to worst parents.
‘I feel like, I could answer that,’ said Kendall who wore a strapless jumpsuit with a print of colorful shoes. ‘I’ll start by saying they all really are amazing.’
‘Okay,’ Harry said, with a cheeky glint in his eye.
Filling in: Harry was filling in for regular host James Corden on the late night talk show
Reality star: Kendall wore a strapless jumpsuit with a colorful shoe print
‘Rob is number one, he is so good to his daughter,’ Kendall said.
She paused and Harry told her to drink the eggnog before Kendall blurted, ‘Then Khloe, Kim, Kylie and… Kourtney’.
Kendall picked the cod sperm for Harry as he said, ‘All in a day’s work,’ before enquiring: ‘How do they get the sperm out of the cod?’
She then asked him, ‘Which songs on your last album were about me?’
Great question: The top model asked Harry, ”Which songs on your last album were about me?’
Harry put a napkin on his shirt and grabbed a fork.
‘Just don’t look at it,’ Kendall said.
‘Oh yeah, because that fixes everything,’ he giggled.
‘What are we doing? What are we doing?,’ the former One Direction star said while chewing the cod sperm and struggling to get it down.
‘Just swallow it,’ a flirty Kendall said.
‘To spit or to swallow, that is the question,’ said a cheeky Harry, before spitting it all out into an ice bucket.
Harry then served her up the salmon smoothie and Kendall revealed that she hates salmon.
Eating up: Harry ate cod sperm instead of answering the question
He asked Kendall who is the highest paid supermodel in the world to name the least likable model.
‘I have the answer, I can’t say it though,’ Kendall said before she drank the salmon smoothie, saying how much she hates it and that it really carries an aftertaste before gagging.
‘Watching you drink that made me feel sick,’ Harry said.
Salmon smoothie: Kendall drank a salmon smoothie when asked to name the least likable model
‘Disgusting,’ Kendall declared.
She then chose a bug trifle for Harry and asked him if he had ever watched an episode of Keeping Up With The Kardashians.
He joked: ‘Yeah, the one where you are all eating salads in the kitchen and shouting at one another… so all of them.’
Kendall also had to choose between eating bull penis and revealing the ‘most surprising celebrity to ever slide into her social media direct messages.
‘WHO IS HE?!,’ Harry yelled at her jokingly.
Tough call: Harry asked Kendall to name the ‘most surprising celebrity to ever slide into her social media direct messages
‘I can say it, right?,’ Kendall asked.
Harry said she had to weigh if saying it was worse than eating a bull penis.
‘I’m eating the penis,’ Kendall said.
She then commented on how squishy it was and Harry said to her: ‘Throw it all in.’
She said it had a ‘crazy aftertaste.’
Bull penis: Kendall opted to eat the bull penis rather than answer Harry’s question
Kendall then picked the giant water scorpion for Harry and asked him to rank the solo careers of his former One Direction bandmates Niall Horan, Louis Tomlinson and Zayn Malik.
Harry immediately started eating the giant water scorpion.
Kendall revealed that she wasn’t into the family reality show Keeping Up With The Kardashians when it first came out.
Quick bite: Harry immediately started eating the giant water scorpion when asked to rank the solo careers of his former One Direction bandmates
Long chew: The singer chewed on the water scorpion for a long time
She would lie that she had homework to do to get out of filming and then went on iChat to talk to friends.
Tracee recalled modeling at age 19 in a fashion show with her ‘boobies out’.
She said supermodel Naomi Campbell, 49, told her that if she was a model you ‘wear what they give you’.
TV star: Tracee Ellis Ross also was a guest on the show
Kendall shared that she had the same experience.
‘My boobs were out the first show I ever did. I had just turned 18 and they were like, ”take the shirt off”,’ Kendall said.
Kendall was promoting the season finale of Keeping Up With The Kardashians on Sunday on the E! network.
Alicia Keys filled in as host for James on Monday’s episode of The Late Late Show.
Same experience: Kendall recalled that she bared her breasts also during her first fashion show
New song: Harry performed his new song Adore You from his new album Fine Line coming out Friday