Chekhov’s carving knife

Yes, we get the joking premise of “what if nursery rhymes were actively written by teams like modern or tin-pan-alley era songwriting partnerships”.  But there is no third stanza in the actual nursery rhyme, nothing like stanzas really … so is that in there just to fit with the (secondary) joke about the Chekhov’s Gun principle?  

Three blind mice. Three blind mice.
See how they run. See how they run.
They all ran after the farmer’s wife,
Who cut off their tails with a carving knife,
Did you ever see such a sight in your life,
As three blind mice?

Poll: your favorite Trudeau

Speaking of Garry Trudeau, Phil Smith III sent in the following recent Doonesbury and reports that the commenting crew at Go Comics didn’t get far with this. Your Editors, meanwhile, confess to not having recently followed Doonesbury closely enough to even know what it would be to get somewhere with an explanation of this episode. But Phil will be on hand to help propel the comments here. Apparently the crux is just what they said or did to lead Mel to face-plant like that.