In the Name of the Pharoah - S5-E35
Continuity mistake: When Kaiba asks the main characters when they are going to give that lame friendship speech, Tristan replies, "When you stop pretending everything is a magic trick." Yugi is standing with his side facing Kaiba, and his head is turned to the right to face him. Also, Tea has her back to Kaiba and turns her head to face him. When the shot cuts, Yugi and Tea are facing Kaiba directly. (00:18:10)