A Ceredigion councillor has questioned the choice of Welsh language in a new Facebook advert to promote its Portal products.

In the advert - which you can watch below - titled Nannies and Grandads, which promotes Portal video calling products, two young children ask ‘How do you say poo in Welsh?’

A voice on the other end of the call is heard responding ‘cachu mawr’ followed by laughter.

Cachu mawr however, literally translates as ’big s**t’.

Ceredigion county councillor for the Llanbadarn Sulien ward, Matthew Woolfall Jones took to Twitter in response to seeing the advert, saying: “Has anyone seen the new Facebook Portal advert? I love that you see the Welsh language on stuff now, but… ‘Can you say poo in Welsh?’ ‘Cachu mawr’ to non Welsh speakers, ye it does kinda mean that, but literally it’s: ‘big sh*t’."

Meta, the new name for Facebook, has been contacted for comment.