I remember this show I once watched (don't remember what it was called) where there were these two siblings, sibling 1 & sibling 2. Now brother 1 did something he wasn't supposed to do so sibling 2 ran off to go tell their dad. Their dad punished sibling 1 for what s/he did, but he also punished sibling 2 equally for snitching on his/her sibling. The dad said something like this to sibling 2, "What you sibling did was wrong, but nobody like a tattle-tale".
If anything, I think there was a lesson to be learned in there somewhere
edited: to take into account that it might have been brothers, sisters or a brother and a sister.