UK grime star Stormzy told seven-year-olds at his old primary school that 'Boris Johnson is a very, very bad man' - as he revealed his dreams of snogging Nicki Minaj.

The 26-year-old megastar, who headlined Glastonbury earlier this year, returned to Kensington Avenue Primary School in Thornton Heath, south London for the light-hearted Q and A, organised by Vice’s music channel Noisey.

The Labour voter, who went to the polls for the first time in his life in last week's election, told the youngsters that the PM was a 'very bad man' and compared him to the 'big, bad wolf', saying he would come and blow the children's house down.

UK grime star Stormzy went back to school, visiting pupils at Kensington Avenue Primary School in Thornton Heath, South London

The Labour voter, who went to the polls for the first time in his life in last week's election, told the youngsters that the PM was a 'very bad man' and compared him to the 'big, bad wolf', saying he would come and blow the children's house down

From the start, the youngsters fired questions at him asking if he wanted to 'snog' Ed Sheeran and why he used bad language in his songs.

Stormzy - real name Michael Ebenazer Kwadjo Omari Owuo Jr - was mostly honest, admitting he wouldn't mind getting up close and personal with 'very, very pretty' Nicki Minaj, but did deny that he used swear words in his music videos.

Another pupil offered a comedy question, saying: 'Why do you not like waste men? They come every Wednesday and do a good job.'

The star offered what his version of the term meant, saying: 'The wastemen I'm talking about are people who waste your time. That's who we don't like.'

The children were flabbergasted to learn that Stormzy had attended their school as a youngster, and asked him how he became famous, to which he responded: 'I worked hard at something I love'.

It didn't take long for the daft questions to arrive, with one pupil asking about why Stormzy uses the word 'wastemen', assuming he was talking about refuse collectors

The star looked a little uncomfortable as the children grilled him about the bad language he uses in his songs

You didn't hear it: He tells the seven-year-olds he tries not to swear

The chart-topper, who was the first black British solo artist to headline the music event, revealed this month that his mother missed the live performance in June because she was praying for him to succeed after the pastor at her church experienced a negative vision about his set.

He told the Observer magazine: 'The pastor saw reviews that said, "The worst performance of all time" and then a hand coming down holding a stamp, and stamping on the review, DENIED.'

Stormzy has said he feared the country was going to 'slaughter' him when his Glastonbury Festival performance was hit by technical difficulties, but feels he was 'saved by God'.

The rapper said he wanted to 'cry so bad; when his in-ear monitors blew twice during his historic set, and that he was certain it would be the end of his career.