Family Guy Season 9 Episode 4 (Family Guy s09e04) with title “Halloween on Spooner Street” aired on Sunday, November 7th 2010 at 09:00 pm via FOX Network.
Here is summary for Family Guy Season 9 Episode 4 :

Peter and Joe team up to execute a series of painful and humiliating Halloween pranks on unsuspecting family, friends and neighbors. While Brian shows Stewie the ropes of trick-or-treating, Meg sets out to attend her first high school Halloween party with high hopes for the evening.