Episode: 5×10 (Season 5 Episode 10)
Name: Peter’s Two Dads
Originally Aired: Feb. 11, 2007
Plot: When Peter accidentally kills his father it jogs his memory that Francis once told Peter he wasn’t his real father. After Thelma tells him that his real father actually lives in Ireland Peter and Brian travel there to find him. Meanwhile, after Lois hits Stewie he discovers that he loves being spanked, and does everything possible in order to get spanked again.
