pat someone on the back
pat (one) on the back
To praise one. Treating his daughter to ice cream was Joe's way of giving patting her on the back after she won first place in the science fair. The only reason he stays late at work is so the boss will pat him on the back.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
pat someone on the backexpress approval of or admiration for someone.
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