So much so that on Sunday afternoon, when Leon ordered a quarter pounder (no onions) at his local McDonald's, then discovered his burger actually contained the offending vegetable, the experience sent him into what police now refer to as a "McFury."
According to The Oregonion, McDonald's offered Leon a full refund for the onion-tainted burger in addition to a brand new burger.
But nothing could set Leon up for a happy meal.
The 50-year-old ended up eating the burger with onions he loathed so much, thereby forfeiting his potential refund. When Leon learned this, KOIN6 reports he threw his soda in the manager's face, broke some glass, and destroyed the cash register.
He then hopped in his car for a Hamburglar-style getaway, but was stopped by officers a short time later.
The Multnomah County Sheriff's Office has charged Leon with first-degree criminal mischief, second-degree disorderly conduct, and harassment.