not know B from a battledore

To be really stupid, or perhaps illiterate. The now-outdated term "battledore" was often used in reference to a children's primer. It was likely used in this phrase simply for the sake of alliteration. How do you manage to burn pasta? It's like you don't know B from a battledore.

Common Names:

Name	Pronounced	Usage
Fredrik	FRED-rik (Swedish), FRED-reek (Finnish)	Swedish, Norwegian, Finnish
Alfhildr	-	Ancient Scandinavian
Innocenzo	-	Italian
Honey	['hʌni]
Eveline	['i:vlin]
ÁGi	-	Hungarian