It is a subject I am as well acquainted with, as I am with my own name, or with my fingers, was used to be said to persons repeating any well known story or circumstance.
«Totis diebus, Afer, hæc mihi narras,
Et teneo melius ista, quam meum nomen».
You are perpetually teasing me with a repetition of this story, which is as familiar to me as my own name.
Fuente: Erasmo, 1391.