Sections of the Madejski Stadium crowd chanted abuse at McGhee to the Millwall bosses distaste.
Eight years ago McGhee deserted the high-flying Royals in order to manage Leicester City. Furthermore, the Scotsman went onto make scathing comments about his former club. Reading fans are yet to forgive him.
Speaking at a press conference after Saturday's game, which Millwall lost 2-0, an angry Mark McGhee said: "I've nothing against Reading Football Club, and I still live in the town. I still get very upset when the crowd get on my back.
"I took them to the top of the Second Division and attendances went from 3,000 to capacity at Elm Park.
"I can understand that there was some reason for them to be upset at the time, but eight years on I simply don't deserve this."
Not content with blasting Reading's support the controversial Millwall boss went onto suggest 2-0 flattered the Royals and that man of the match Nicky Forster isn't as good as several of the Lion's stars.
When asked if he blamed goalkeeper Tony Warner, who appeared to be at fault for the first goal, for the defeat McGhee commented: "It was a mistake, but I don't blame Tony. I do think 2-0 flattered Reading though."
Commenting on superstar striker Nicky Forster, who is currently in a hot streak of form the Millwall boss added: "He is good, but not as good as some of the players I have at my club."