WATCH: Dem. Rep. snatches phone in testy airport exchange over Biden's mental clarity: 'Who owns you?'

FIRST ON FOX: Longtime Democratic Rep. Marcy Kaptur was captured on video Friday losing her patience with a man who asked her whether President Biden should step down following his widely panned CNN debate performance. 

"Excuse me congresswoman, should Joe Biden step down?" A man in the Detroit airport asks Kaptur in video obtained by Fox News Digital. 

The 78-year-old congresswoman ignores the question as she is going up the escalator through the airport, which prompts the man to repeat the question.