travelling 'round the world like gypsies and pirates

a) spontaneously doing things and trying to accomplish big projects without having though them through comme du monde

b) going on unplanned, retargerous (to most rational people), harebrained adventures

i don't want my kids travelling 'round the world like gypsies and pirates; i want them to grow up pragmatic and rational people.

gypsy pirate

A Gypsy Pirate is like someone who sails the seas, and belong no-where.

But originally is from India down the line, Hence Gypsy/Roma.

1:)The origins of these pirates are Gypsy/Roma.
2:)They Are Gypsy Pirates.