When someone says: I am building an Ark, ?

Question

what does it really means? i think it is an Irish expression.

Cheers, and thanks for all the asnwers.

Answer 1

I'd buy myself a pair of wellies and a sou'wester, if I was you!

Answer 2

It means its been raining heavily, like today...and all summer, sucks..

Answer 3

Not just Irish, it refers to Noah and the Flood. Usually a whimsical reference to the "damp" summer, they are implying that if it rains much more we ought to be prepared like Noah was.