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• S4.E1 ∙ Graduation
• S4.E2 ∙ A Docent, A Little Lady and a Bouncer Named Dalton
• S4.E3 ∙ Training Wheels and an Unleashed Chicken
• S4.E4 ∙ Bible Camp and a Chariot of Love
• S4.E5 ∙ A Musty Crypt and a Stick to Pee On
• S4.E6 ∙ Freshman Orientation and the Inventor of the Zipper
• S4.E7 ∙ A Philosophy Class and Worms That Can Chase You
• S4.E8 ∙ An Existential Crisis and a Bear That Makes Bubbles
• S4.E9 ∙ Crappy Frozen Ice Cream and an Organ Grinder's Monkey
• S4.E10 ∙ Cowboy Aerobics and 473 Grease-Free Bolts
• S4.E11 ∙ A Pager, a Club and a Cranky Bag of Wrinkles
• S4.E12 ∙ A Box of Treasure and the Meemaw of Science
• S4.E13 ∙ The Geezer Bus and a New Model for Education
• S4.E14 ∙ Mitch's Son and the Unconditional Approval of a Government Agency
• S4.E15 ∙ A Virus, Heartbreak and a World of Possibilities
• S4.E16 ∙ A Second Prodigy and the Hottest Tips for Pouty Lips
• S4.E17 ∙ A Black Hole
• S4.E18 ∙ The Wild and Woolly World of Nonlinear Dynamics