Meaning of “to wrap the ol’ noodle around”?
Noodle → head.
Wrap one's head around → understand.
So the sentence says that "em values" are probably the most difficult thing to understand, etc.
Meaning of “to wrap the ol’ noodle around”?
Noodle → head.
Wrap one's head around → understand.
So the sentence says that "em values" are probably the most difficult thing to understand, etc.