Number One - S1-E24
Continuity mistake: When Randy is scratching off the joke lottery ticket, the amount of scratched-off material left on the ticket changes between the three close-ups. One shot shows that the ticket was rubbed and not scratched (the area revealed has a haze to it).
Number One - S1-E24
Continuity mistake: Just after Earl sells the car and he's arguing with Randy, you can see a red fence in the background behind Randy. The shot cuts and then it's behind earl and it cuts back and it's behind Randy again. (00:19:00)
Answer: Sounds like s04e11, "Nature's Game Show."
Bishop73