There's that peculiar phrase again: laughed like a drain . I found a neat site on Welsh and just wrote and asked the guy if he knows its origin, though I doubt he'll answer.

Look what else the site said:
Is it really true that Welsh is spoken in South America?
Unlikely as it may seem, yes. In 1865 a shipload of Welsh pioneers sailed to Argentina to start up a Welsh-speaking colony. A few of their descendants still speak Welsh, and there is considerable interest among the young in reviving the language of their ancestors.
http://www.gwybodiadur.co.uk/