Some people's hair naturally forms into locks if it's never brushed or combed. Someone I was at university with tried it and it worked. Tbh, the guy in this video looks as if he has gone down the 'never brush or comb' route.
This is worth a listen if you've got the time...
While I think the whole notion of cultural appropriation is ludicrous and offensive (and seems to be one-way*), I do find it strange that anyone would go to a Jamie's Italian when there are so many excellent Italian restaurants run by Italians with food cooked by Italians just round the corner...