Born with A Silver Spoon in His Mouth

My neighbour was born with a silver spoon in his mouth but he kept it under his hat. When he told me in a moment of drunkennes I said "You're pulling my leg!" But it was true and he'd let it out of the bag. I always wondered. He lived humbly but when we painted the town red he always footed the bill. I thought he just worked hard and burned the candle at both ends. But apparently he got the lion's share of a huge country estate. I thought he would hit the ceiling when he realised he'd told me his secret. But instead he kept a stiff upper lip. All he said was "I've let the cat out of the bag now." I told him I would keep mum, but ever afterwards he gave me the cold shoulder. I asked him to have a heart, to no avail. I was between a rock and a hard place. What could I do? Never mind. He's six feet under now.

born with a silver spoon in his mouth: born very rich
kept it under his hat: keep it a secret
pulling my leg: joking
let it out of the bag: reveal secret
painted the town red: go out and have a good time
footed the bill: pay
burned the candle at both ends: go to bed late, get up early
the lion's share: the majority
hit the ceiling: get very angry
kept a stiff upper lip: remain cool
let the cat out of the bag: reveal a secret
keep mum: keep quiet
gave me the cold shoulder: ignore
have a heart: be kind
between a rock and a hard place: in a dilemma
six feet under now: dead and buried