1.
pat on the back
It’s easy to underestimate the power of a pat on the back, especially with top performers who are intrinsically motivated.
Good job, Thomas, you can really give yourself a pat on the back for it.
2.
a back slap
英語 "という言葉klepnięcie w plecy"(a back slap)集合で発生します。
Real-life superwoman