Pair of Kings (2010)

S3E16 Thumb & Thumber

Boz embarks on a mission to assist Boomer in achieving his lifelong aspiration of becoming a professional athlete. Boomer feels confident in his abilities in the perilous island sport of Thumb War. However, when he bets the castle on his thumb-wrestling skills and ultimately loses, he discovers he’s been duped by a scheming villain from the Dark Side.