A little vague but you might be speaking of the time when Peter did cocaine in Season 5|Episode 17 It Takes a Village Idiot & I Married One
Mia dumps Peter in the first episode of season 9
Peter, Peter, Caviar Eater
the one when Peter knocks out cable and blames it on meg... its called i never met the dead man
Peter's Two Dads
The episode where Peter cheats death which is entitled "Death is a B****" (explative deleted).
S06|E08 McStroke
Peter Kay was in the episode Love & Monsters.
Peter can speak Greek and English.
Mia dumps Peter in the first episode of season 9
Season 2|Episode 8 I Am Peter, Hear Me Roar
Peter, Peter, Caviar Eater
the one when Peter knocks out cable and blames it on meg... its called i never met the dead man
Season 3|Episode 14 Brian Wallows and Peter's Swallows
Season 5|Episode 10 Peter's Two Dads
There's no such episode.
the episode "Petarded"
Peter's Two Dads