Fish Hooks (2010)

Season 1: Episode 37

Oscar's impression of the Queen of Fish England is so similar that even Mr. Mussel's, who is a big admirer of the Queen, cannot tell the difference. The gang goes along with the ruse, until Oscar is mistaken for the Queen by a bridal party and swept away to "his" royal wedding. The day then escalates into a "Slow Jams Rap Battle" between Milo and Mr. Mussels to win the hand of the fair Oscar.