This question cannot be answered since no one has a crystal ball or has insight into the ideas of the writers.
If one day they decide it would make a good story line or an idea for a cutaway then perhaps we will, but in the meantime, no one knows.
Jitterbug
There isn't an episode that features Peter and Glen in school together but you may be thinking about Season Five|Episode Eighteen Meet the Quagmires
Ocean's Three and a Half
Ocean's Three and a Half
Hugh Hefner: "Airport'07"Hugh Laurie: "One if by Clam, Two if by Sea", and "Business Guy"Hugh Grant: "Stuck Together, Torn Apart"Hugh Downs: "Kiss Seen Around the World"Those are the different Hughs that have appeared in Family Guy.
Meet the Quagmires is episode 18 of season 5 of Family Guy.
Family Guy - 1999 Meet the Quagmires 5-18 is rated/received certificates of: Canada:13+ (Quebec)
Meet the Quagmires
Season 8|Episode 18
Pretty sure you're referring to Meet the Quagmires
Family Guy - 1999 Meet the Quagmires 5-18 was released on: USA: 20 May 2007 UK: 28 August 2007 Hungary: 27 May 2009
555-0143. That's what his left butt cheek says, anyway.
You Can Hear It In The Family Guy Episode Entitled Meet The Quagmires.
Whistle While Your Wife Works
Wrong show. Roger is on American Dad.Although he did make a cameo appearances in Meet the Quagmires & Bigfat
Death Is A Bitch Death Lives Meet The Quagmires I take Thee quagmire perfect castway and many more
Jitterbug