"But sir!" said David indignantly, getting his breath back. "You told me to take them!"
"Told you to take them? I did nothing of the kind! I told you to take a pile of old junk from the table on the right-hand side of the door. These plants were on the left-hand side. Good heavens, boy, don't you know your left hand from your right hand?"
Well, there it is. David just stood there, getting redder and redder. For the fact of the matter is that David often doesn't know his left hand from his right hand unless he stops to think. He is left-handed, you see, and naturally his left hand is the important one to him and when you say to him, turn right, he often just automatically sturns left - Jill and I are always teasing him about it...
From JUMBLE SALE.