Star Check Unconventional / Dexter is Dirty / Ice Cream Scream

S2 E14: "Star Check Unconventional": Mom drops Dexter and two of his friends off at the Star Check Convention - they're dressed as Capt. Irk, Spork and Phones (respectively). Mayhem ensues when the three little checkies wander into the doll convention by mistake. / "Dexter is Dirty": Irritated at always having to wash his hands and himself, Dexter laminates his body from head to toe. The only problem is that now he's so slick and slippery that he can't do anything. / "Ice Cream Scream": After several unsuccessful attempts to flag down the ice cream truck, it becomes clear that the ice cream man is purposely avoiding Dexter. Using some high-tech tricks, Dexter finally catches him, but learns that the ice cream man was ignoring him because of a past purchase that totally devastated his life.