The Conservative leader, who is trying to cement his future after a revolt against his leadership earlier this week, visited Blackpool and The Fylde College on Thursday.
Before giving a speech setting out pledges to help with the cost-of-living crisis, Mr Johnson was given a tour of the college’s Construction Skills Centre.
Bricklaying student Alex showed the Prime Minister how to lay mortar and bricks and use a spirit level to check they are even.
After having a go, Mr Johnson said: “That’s not too bad. That’ll definitely stay up.”
But as he met students in another room, he admitted: “My bricklaying was pretty terrible. They haven’t fallen down yet.”
Cassidy, an apprentice plumber at the college, demonstrated how to bend copper piping, leading the PM to joke he was like spoon-bending illusionist Uri Geller.
He told the student: “Precious stuff, copper. People are trying to nick it the whole time.”
During his speech, the Prime Minister said the Government is skilling up British people by investing in colleges such as Blackpool and The Fylde.
He said: “380,000 now have gone off welfare into work out of the Way to Work scheme, above all by skilling up British people with the Lifetime Skills Guarantee and all the investments that this Government is proud to make into such fantastic colleges such as the one I’m proud to be standing in today.”