He is a self-styled stumblebum and semi-incompetent.
Word Origin and History for stumblebum
n.
"alcoholic derelict," 1932, from stumble + bum (n.2).
Slang definitions & phrases for stumblebum
stumblebum
noun
An alcoholic derelict; a drunken drifter; Skid Row Bum: to bemoan the lack of charisma and to paint the candidates as a wrangling collection of stumblebums(1932+)