A phrase not often heard nowadays, much like "forgive me" and "I'm a virgin."

a Feckless, Shameless, Coward whose purpose in Life is to please Donald J. Trump with Oral Praise and Bullshit Compliments. ( Noun ).

1. an expresion of gratitude used primarily as a formal, friendly, social obligation.
2.When used in it's true form (not merely out of obligation) it is an expresion of respect and appreciation to another soul (and simultaneously to all beings) for the unconditional kindness that has been bestowed upon you.

Used to express sincere gratitude after a rewarding event

A phrase which expresses gratitude.

something you say when someone does something nice for you

Something you should say after receiving a service.