Superfish

S2, E3: Toby has his eye fixed firmly on Jack's sister Nikki. He is desperate to impress her, but how? Given she's a swimming star, he decides his best chance is to get on the school swim team. There's only one problem, Toby's a pathetic swimmer! Toby uses wicked science to invent a body oil to help move through the water like a seal. This threatens Garth's tenuous position on the swim team and when Elizabeth learns what Toby's up to she intervenes, tampering with Toby's oil. At Toby's next race, the new 'oil' causes him to behave like a performing a seal, embarrassing him in front of the whole school and more importantly, Nikki. He realizes he should never have used 'wicked science' for his own selfish reasons and, even worse, he might have lost Nikki for good.