McCarthy, who worked with Martinez at Wigan before moving to Goodison, can still feel the effects.
He said: "Obviously, he wasn't happy. Everyone else at the club was really disappointed. He said his thing after the game and made us all aware how upset he was, how angry he was.
"To be honest, each and everyone of us knew how much we had let ourselves down. We wanted to make amends for it against Aston Villa and that's what we did.
"The gaffer is the boss. He will tell us what's right and what isn't. He asked the boys to speak up and they did.
"It's never nice to lose a game - especially to Liverpool - but being beaten in the manner we were wasn't good enough."
For breaking stories and all the great banter like us on Facebook: facebook.com/tribalfootball