Lick and a Promise 

This is originally London slang and quite an old expression; its first recorded use is in 1838 in an English newspaper (The Era) where it was used to describe a uninterested or half-assed attempt at any sort of task or job. Gradually its use changed until, by the time The Era closed in 1939, it was used and still is used to describe a perfunctory wash, less thorough that even HF-AGBA, a BBA or an airplane bath.

Malcolm’s really stinking this morning, I don’t think he even bothered with a lick and a promise.

Lick and a Promise by AKACroatalin September 9, 2016

Promise Ring

A promise ring is a sign of commitment between two people. Often, it is the first token of a serious relationship that is just developing, but exchanging promise rings can equally be a symbol of a joint commitment which is not related to love. A promise ring can mean many things: I promise to always love you.

''I want to marry you in the future, and I want to show you how serious I am about you. I give you this promise ring as a symbol of that''.

Promise Ring by ohsnapitziris September 18, 2018

Abigail’s Promise 

A nonsensical principle coined by the YouTuber, “Internet Comment with Erik”, being a parody of commonly referenced philosophical principles in media such as Occam’s razor and Chekhov’s gun.

“Did you hear about that new Lord of the Rings series? Classic Abigail’s promise right there.”

Abigail’s Promise by Commentiquette Student April 16, 2022

Pinkie Promise 

It's a special kind of promise. Nopony breaks a Pinkie Promise. 'Cross My Heart, Hope to Fly, Stick a Cupcake in my Eye!' is the pinkie promise.

Alright man I Pinkie Promise, I Cross My Heart, Hope to Fly, Stick a Cupcake in my Eye, that I will tell you tomorrow.

Pinkie Promise by tiger3y3s September 22, 2013

non-core promise 

An election promise that you have gone back on after the election is over. It is important not to define what promises are core and what are non-core before the election itself.

After winning the 1996 Australian Federal election John Howard slashed spending on Education, Health, Social Welfare blaming a budget deficit left by the previous government. When it was pointed out that he had promised not to cut spending on these areas as part of his election platform and that he had lied, he claimed that these were "non-core promises"

non-core promise by Ormas October 19, 2005

Promise 

The definition of Beautiful. The real meaning of 'One in a million'. Usually of exqusite natural beauty. Smart & Witty, headstrong & focussed. Determined, stubborn as hell! Loving and playful. The most fabulous smile, which lights up a room. Simply stunning inside and out. A diamond in the rough.

You are truely blessed if you ever meet a Promise...

Promise by Ispeakonlythetruth February 4, 2010

Pinkie promise 

The most sacred promise anyone can give. When broken, you lose your friend forever. The pinkie promise is done by uttering a chant and doing the motions

AJ: you bettar not tell Twi that ah lost her book. Y'all know what happened last time thayt happened.

RD: Pinkie promise. Cross my heart, hope to fly, stick a cupcake in my eye.

RD crosses a hoof over her heart, opened her wings and gave a flap, and put a hoof to her eye.

AJ: thanks, Dash. Ah really don't know what ah'd do without y'all.

RD: no problem, pal.

*later*

RD listened to Twi talk about her new book she lent to AJ. She bit her lip, and opened her mouth to confess. Suddenly, Pinkie sprung out of a potted plant

Pinkie: you'll lose them. Foreeeeeevveeeerrrrr
She slowly disappeared into the plant.

RD: don't question it...

Pinkie promise by Fluttershy the mare wolf December 8, 2013