I see a little silhouetto of a dude Adventure Time t-shirt by Jango Snow. "Oooian Rhapsody" is a parody of Queen's Bohemian Rhapsody.
*The Shirt List gets commissions for purchases made through this link.
This shirt is sold by TeePublic. TeePublic is an e-commerce platform that connects independent artists with their fans and allows them to sell their art on t-shirts, apparel, and accessories.