backslapping
From Longman Dictionary of Contemporary Englishbackslappingback‧slap‧ping /ˈbækˌslæpɪŋ/ noun [uncountable] PRAISEbehaviour in which people praise each other’s achievements more than they deserveExamples from the Corpusbackslapping• A genuine initiative, or just another excuse for backslapping and all-star music line-ups?