Isn't the thing he lacks the back-slapping jocosity that passes for humor here?
Only the Governor's back-slapping mediation had allowed them to reach a politically stable relationship.
Such hand-shaking and back-slapping and outcries of honest pleasure as greeted him!
Here happened that accident of the back-slapping so frequently alluded to by her ladyship.
Loud, back-slapping men, gabbling endlessly about baseball players.
adjective
Demonstratively friendly: the back-slapping jocosity that passes for humor here (1777+)