Personalized Methane Man Toddler Long Sleeve T-Shirt. Methane man in evaporating text is a funny design for that gassy special someone who doesn't mind being a human air freshener. Great gag gift at birthdays, bachelor parties and holidays. A classic for Fall, Winter and Spring, these long sleeve toddler t-shirts are sure to be a staple in your child's wardrobe. Whether layered or alone, this t-shirt is soft yet durable enough to stand up to your toddler's playtime demands.