National Lampoon's The Legend of Awesomest Maximus (2011) on Netflix

Plot summary

Awesomest Maximus is a Trojan general, a bumbling slacker who cares more about food and about his difficult wife Hottessa than about soldiering. A prophecy of future greatness hangs over him, and his rank comes largely from his marriage into the family of the aging King Looney. The king gives him a mission: travel to Greece and arrange a peace with the flamboyant King Erotic. It falls apart when Prince Orlando, Hottessa's brother and a lover of fashion, persuades King Erotic's wife Ellen to abandon her husband and become his best friend instead. King Erotic is furious, and the two sides prepare to fight.