- During the "Bag of Weed" song, Brian and Stewie put many bags of weed in the cannon: when it fires only 11 bags fly out, and only 6 are seen to land. Similarly, Stewie is only holding 5 bags near the start of the song, but somehow manages to throw 8 bags out to the crowd.
- When Peter and Brian are pulled over by the police, when the officer on the right was talking, Peter had a small blot of blood on his forehead, but in the next scene when the other officer talks, it disappears.
Previous Episode's Goofs /// 420's Goofs \\\ Next Episode's Goofs
| << Season 6 | Family Guy Season 7 | Season 8 >> | ||||||
| #01 | Love, Blactually | #07 | Ocean's Three and a Half | #13 | Stew-Roids | |||
| #02 | I Dream of Jesus | #08 | Family Gay | #14 | We Love You, Conrad | |||
| #03 | Road to Germany | #09 | The Juice Is Loose | #15 | Three Kings | |||
| #04 | Baby Not On Board | #10 | FOX-y Lady | #16 | Peter's Progress | |||
| #05 | The Man with Two Brians | #11 | Not All Dogs Go To Heaven | |||||
| #06 | Tales of a Third Grade Nothing | #12 | 420 | |||||