William Bateman, from Cambridgeshire, used his mother's computer to put in a 3,500 pounds bid for the white truck on eBay.
The mother was horrified to discover he had won the online auction - but managed to persuade eBay to scrap the deal.
"He bid for the lorry while I was logged into my eBay account," William's mother Fleur said.
"He's obsessed with rubbish and bin lorries. He asks people when their binmen come and if they are recycling their rubbish," Fleur said.
He has a huge collection of toy wheelie-bins, high-vis jackets, miniature lorries and packaging.
