it is thought to be bad luck to comb someone's hair on good friday (mangaratiba).

a holy wafer of the divine eaten at church brings people lots of luck (angra dos reis).

it is bad luck if too many people stir a pan.

a really interesting belief is that if someone asks to borrow flour on friday, and is denied the flour, the flour will turn into blood. (paraty).

stepping into coal is considered very bad luck (macaé).