An old classic.

And the goode wyf answerde that she coude speke no frenshe. And the merchaũt was angry. for he also coude speke no frenshe, but wolde have hadde egges; and she understode hym not

Circa 1490. Lower third of the image in this charming page. (I still wonder: why French?)

I'm pretty sure it was somewhere around St Pod's that I first heard this tale; it is a fun one!