Davis-Douglass Disorder

When one confuses two popular people, places, or things that are complete opposites, leading to a major foot-in-your-mouth moment.

"Jefferson Davis was heavily involved in anti-slave activities while Frederick Douglass was heading the confederacy."-Meghan
"You mean the complete and total opposite."-Daphne
"Their names sound so similar! Damn my Davis-Douglass Disorder!"-Meghan
*A few minutes later*
"Wait, which one is which again?"-Meghan