It does have a tiny bit of slang in it but if you speak Welsh, it shouldn't be hard to work out :)

does nid angen ddynas.....' neith fy ddwy law cadw "FO" yn gynas
Anyone know what this means?

Hwyl a spri

Which of the Welsh Rugby squad speak welsh?

I think the question speaks for itself really
Yndw, dwi'n siared cymraeg, a does dim angen fy ngalw i'n chi chwaith, ond diolch am y parch