Blatant Lies: Tristan convinces Serenity that he is the main character of the show, has more fangirls than Joey, and that said fangirls like to pair him up with Joey (though that last lie could be considered technically correct).
Card-Carrying Villain: Yami is quick to point out how inconsistent Marik's evil plans are. Marik insists that the mere fact that he is evil is all that matters.
Curb-Stomp Battle: Yugi reveals that his battle against Jaiden in the final episode of Yu-Gi-Oh! GX (which never got an actual conclusion) was this. Apparently Jaiden started crying so hard that the network refuses to air it.