Late birthday cards

I forgot to buy your birthday card once more
Maybe I don’t love you,you’re a bore.
If you want to leave me,I am glad
Living with your rules made me go mad

Alas I bought a card but not a stamp
Please don’t kick me in my big round rump

I decided that the cards were  very poor
So  maybe I shall find one by next year

If the first class stamps increase in price
We’ll be living on just  plain old rice

I did not send a card,my dearest love
But I shall send a message via my dove

I saw  a card I liked by the shop door
Then I realised I am  now poor
The card was four pounds fifty, I was stunned
I’ll have  to give up  drinking all this rum

I grow older and alas I am quite bad
I am wicked and you are very sad
I never bought a card or wrote a note
See the beam in your eye, it’s my mote