The idiom a lick and a promise means if you give anything a lick and a promise, you did it in hurry, most probably incompletely planning to return to it later.
1. I didn't have the time to clean the whole garden, just gave the garden a lick and a promise.
2. I was late for the party, just put on my suit and gave my shoes a lick and a promise and left the home.
3. We only give the gaudy ones a lick and a promise.