A declaration from
somebody else, usually with a
specification on what it is you're doing or saying that they think is so utterly
wrong and
asinine that the
foolishness of it should occur even to
you.You
probably heard this
inserted into many a
phrase from
your mother plenty of times as you were
growing up.
"You know better than to throw
Mittens into the
ceiling fan, you little
fucker! I've told you at least a thousand times!"