Biden in a haze of confusion thinks Donald Trump is the sitting President.

Clip of a new verbal slip-up from President Joe Biden, in which he referred to Donald Trump as a "sitting president," sparked renewed mockery from conservatives online.

Biden has long been noted for a trend of awkward verbal gaffes or slip-ups during public addresses, going back to his time as vice president from 2009 to 2017. As president, the trend has taken on a new dimension for many who claim that he, the oldest person to hold the office, is mentally unfit to lead the nation and point to his gaffes as proof. Others have defended Biden, noting his history with a stutter that may contribute to his public speaking difficulties. This is not a stutter but a red flag!