Cascaroso
A laid-back person who loves joking at other people's expense and never takes anything seriously. (The term derives from the Panamanian sketch and prank show La Cáscara).
A: 'But he told me he was going to marry Lorena.' B: 'Pedrito isn't getting married at all, don't pay him any mind. Don't you see he's always been a cascaroso?'
Automatically translated from Spanish