By Breaking Celebrity News Staff

Take it from former American Idol judge Kara DioGuardi: know what you’re getting into before you eat brownies from Paula Abdul's fridge.

The Grammy-nominated songwriter said she was staying at Abdul's L.A. home when her late night munchies inadvertently landed her in the E.R., as she didn't know the sweets she scarfed down had marijuana baked into them.

"The maid at the time found some brownies in the freezer and put them in the refrigerator ... I hadn't really eaten much that night," DioGuardi, who worked alongside the Opposites Attract singer on the show's judge’s panel in 2009 and 2010, told George Lopez on Wednesday's Lopez Tonight.