Just call him President Jo-slip Biden.Joe Biden, 80, slipped and nearly tumbled down the stairs while exiting Air Force One on Tuesday – just hours after it was revealed that the commander-in-chief is working with a physical therapist and using shorter stairs to avoid further trip-ups. The near-miss occurred moments after Biden touched down at the Detroit Metro Airport, where he was greeted by United Auto Workers President Shawn Fain, Lieutenant Governor Garland Gilchrist, Rep. Debbie Dingell, Rep. Rashida Tlaid and Rep. Shri Thanedar, the clip shared by radio reporter Alex McLennon shows.Despite the hair-raising moment, Biden recovered smoothly and appeared unbothered by the gaffe. Now, as polls show a majority of voters are increasingly concerned about his age, Biden's team is taking extra steps to prevent him from stumbling in public, Axios reported, betting that any mockery he receives will be worth it to avoid a public tumble.And there has been some mockery. The president broke the internet in July when he wore Skechers without socks before boarding Air Force One to head to a NATO summit in Europe, with users fiercely debating whether or not bare feet were acceptable.