Avoir du cul / Avoir du pot / Avoir du bol.

The phrases don't mean ' have a ass, have a pot or have a bowl.'  Since 1960' it means lucky. Otherwise ' pot ' and ' bol ' two words means the hole of dirty stuff from the 19th century. It means ass too. That's why all of them mean lucky now. Par exemple : il a du cul parce que l'enseignant n'a pas vu il triche l'examen.

Avoir = have

du cul = the ass

du pot = the pot

du bol = the bowl