Someone who has watched so much Family Guy that they continually make references to cutaway gags or moments from Family Guy in relation to real life scenarios
Friend: so I've been growing out my beard and...

Family Man Addict: HA! That reminds me of the episode where Peter's beard becomes a bird nest

Friend: man you gotta lay off the show, you're developing family guy syndrome

Family Man Addict: Just like the episode where peter thinks he's inside a TV show
by Briangriffindefender.xX July 22, 2023
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Is the terminal disease of the brain in which the sufferer cannot spend a whole day without repeating word for word jokes from the previous nights Family Guy episode. This disease results in the deterioration of the brain, where the victim becomes a zombie to plagerized jokes.
Mark: "So then Stewie was all like 'What the duece!', haha."
Adam: "Mate, you might want to get your Family Guy Echo Syndrome checked out?"
by Scimitar October 26, 2007
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When someone is overly obsessed with the hillarious hit tv-show Family Guy. Some common symptoms of this can be things like; boring the living crap out of your friends by telling the same Family Guy jokes over and over, turning all of your conversations into "did you see yesterdays episode?" or "so Peter was like...". One of the most irritating and shit indulcing symptoms is retelling an entire episode word by word thus extremely boring the other person. If not treated it can leave your personality consisting of nothing but Family Guy jokes.
Family Guy Personality Syndrome (FGPS) victim: Did you see yesterday's episode?!? I almost shit my pants twice!!

Diego: Ehh, no.

FGPS victim: Welllll, let me tell you the whole episode detail by detail! Don't worry it will only take about half an hour and be nowhere near as funny as actually watching it.

*Diego has now left the conversation, or risk getting a severe ear injury.*
by BrazilianFOsho June 3, 2011
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