..."legal citation" (from an *original member (a name with litigatable reference))... for that "pundit of long ago" line...

...meaning you get yelled at for violating the rule that the antepenultimate line of the DD poem - by definition - need be a one-word Double-dactyl. (Oh yeah, and Line No. 2 ought to be a double-dactylic name or identifier, too.)

The "legal" part? Hinting obliquely at the identity of the original Yeller without naming him/her, without writing our here-Forbidden Character. And, in a way, hiding behind the unuttered taunt "Let it be a challenge to you!"