One of my daughter's friends had her hair like this the other day and so I asked her mom how she did it. It was so easy! I couldn't believe it.
You have to have it wet, at least on the top, and use mousse, gel, or whatever you normally use to help hold the do, then hairspray afterwards
Just divide into sections, then divide each section into two parts.
Literally it's just a knot that is wrapped three times intead of just once.
Pull the 'knot' tight and hairspray it.