heimer (as in heimat) is almost untranslatable.
heimat is 'homeland' but not in a nationalist way, more like this is my little peice of earth, my place were i am at home.

a wizenheimer is local wit. sassy, but not in the psuedo sophisticated way kids are on TV, but the way kid really are--mostly dumb, and whiney, and boring, but occationally there is a kid who isn't trying to be sassy, but asks (or says) all the wrong thing at the right time..
a social idiot savant..