Afternoon of the Living Glitch / Mindsuckers from the Depths

T1, E2: When Squirt's stinky underwear is washed in toxic cleanser, the gitch comes alive and leads the rest of the laundry on a campaign of terror. AND A huge, evil leech attaches itself to Squirt's skull and turns him into Evil Squirt, a super-genius bent on world domination. All hail leeches!