Billionaire Boy is a children's fiction book written by David Walliams and illustrated by Tony Ross.

Then they encounter Dave and Sue Grubb, two bullies whose main target is always Bob.

Len Spud arrives in a Bum Air helicopter, unveiling Joe's secret to the entire school.

Joe is chased by everyone, all wanting money from him, and ultimately arrives to Miss Spite five seconds late, and she puts him on litter duty; Joe tries to explain, but Miss Spite does not listen and puts him on litter duty for a month.

During his litter duty where Bob helps him, the Grubbs arrive to reveal Joe's money deal with them.

Bob, angered, calls Joe a spoiled brat and leaves, ending their friendship.

After the half-term holidays, a new girl, Lauren, arrives at the school and all the boys have their eye on her, even Joe.

Joe comes home one day and finds out that his Dad is holding a massive party.

Bob accepts but they soon find out on TV that Mr Spud had lost his fortune as everyone is suing him because Bumfresh is making everyone's bottom go purple.

Joe returns to Bumfresh Towers, and his father suggests that he should save something from the house before the bailiffs take everything.

He was bullied at his last school because his father made his fortune by making loo rolls, he is very socially awkward.

Their parents can't tell them apart and they are sent to a boot camp in America for juvenile delinquents.

When Joe gets litter duty, Len Spud (his dad) gets Miss Spite sacked.

She takes plastic surgery to look young again after Joe lends her money to 'fix' her limping posture.

Billionaire Boy received positive praise from reviews by newspapers such as The Guardian[2] and The Express.