@oristarA,
That kinda reminds me. I asked my Mama once, I said: " Mama, how's come I just can't seem to understand arithmetic?"
She said: " Looky here, Lay-boy, ya can't put 10 pounds of **** into no 5 pound bucket. Remember that, boy."
I said: "OK, Mama."
And I did. Remember it, I mean. Still don't know what she meant, though.