In the Jawa language 'barrah' means courage. A certain group of young jawas has been so selfless that people started calling them The Barrah Jawas. The biggest reason they got this name was rescuing people from a huge flood during a rare monsoon.
Musapha holds a huge grudge against the Barrah Jawas even though they have only done nice things for him. Such as throwing him a suprise birthday party and moving his bed closer to the bathroom, since he keeps peeing his bed, without making a big deal out of it.