Valentine's Day in Quahog - S11-E12
Continuity mistake: When Quagmire gets shocked, the plug socket has 3 holes in it. When Quagmire is hitting the ground, there is only 2. (00:04:20)
Valentine's Day in Quahog - S11-E12
Continuity mistake: Just as Meg's date is about to leave the motel, the level of ice in the bath changes. Note its position in relation to Meg's Scar. (00:08:30)