What does ano de la cachetada mean?

ano de la cachetada meaning in Urban Dictionary

just like ano del caldo, (year of stew) this term in addition describes one thing or someone who is out-of-date and really requires a significant make-over. Virtually indicates "year of the punch." (Implying, no body understands or remembers whenever exactly was the entire year of the slap as it ended up being so long ago.)