Okay, imagine you're playing with your toy drums. You hit the big drum twice and the small drum once. That's what normal drummers do, but there's a special way of playing that's called the Purdie Shuffle.
Bernard "Pretty" Purdie, a famous drummer, invented this way of playing. Instead of hitting the big drum twice, he hits it three times - but not all the same way! The first time, he hits it hard. The second time, he hits it softly. The third time, he hits it hard again.
Then, instead of hitting the small drum just once, he hits it twice - but again, not all the same way! The first time, he hits it softly. The second time, he hits it hard.
When you put these different hits and rhythms together, it makes a really cool and funky beat that lots of drummers like to use in their music. So the Purdie Shuffle is a special way of playing drums that adds some extra grooviness to music!