he is always backslapping his colleagues at staff meetings.
Examples of backslap
backslap
There is no known report of a backslap saving a choking victim.
From the sfgate.com
Unlike other convention groups, they did not backslap.
From the time.com
I am in Sydney for the ARIA Awards, the Aussie music industry's annual backslap and series knees-up.
From the au.news.yahoo.com
Victorious players embrace each other, though generally bring a hug to a close by butching it up with a backslap.
From the smh.com.au
After games, Mr. Ryan wanders back to the clubhouse to backslap and gladhand the players and assembled reporters.
From the online.wsj.com
I notice the final backslap before entering no.
From the guardian.co.uk
Most social encounters in Washington are part backslap and part business, and these had more of the former than the latter.
From the time.com
After the first rush of dinner service, Passot sneaked out into the dining room to greet enthusiastic patrons with a kiss on each cheek or a backslap.
From the sfgate.com
In celebration of a victory at Detroit, 49ers coach Harbaugh gave Lions coach Schwartz a roundhouse handshake and a backslap that Schwartz took offense to.
From the timesunion.com
More examples
Display excessive cordiality (towards); "he is always backslapping his colleagues at staff meetings"
To display excessive or effusive goodwill or cordiality (to someone)