HE CAN'T FLY THE PLANE
Barack Obama was in full-blown stand-up comedy mode Friday night in Georgia -- where he skewered Herschel Walker as wholly unqualified for the Senate ... among other occupations.
The ex-Prez was stumping for Rev. Raphael Warnock -- who's running to maintain his Senate seat in a highly contested race -- when he started to lay out comparisons between the current Senator and Walker ... going on to crack jokes at the latter's expense.
Watch .