Jaffer, who is entering as a Michael Jackson impersonator, was put in for the ITV1 talent show by his brother and sister.
According to The Sun, his parents were unaware that he could dance and has been learning Jackson's dance moves in private at his home.
The Peterborough-born performer will appear in front of an audience of 3,000 and judges Simon Cowell, Amanda Holden and Piers Morgan next month dressed in a classic Jackson white suit.
"He's unbelievably confident - he told us he wants to dance in front of the Queen," said his mum.
Britain's Got Talent auditions are taking place in Manchester today, before heading on to Cardiff, Newcastle and Birmingham. They finish at the London Hammersmith Apollo on February 10.