I'm sorry I missed your birthday,
The time flew by so fast,
I never realized that it was here,
Until it had already past.
So let me just send greetings now,
I hope it's not too late,
I wish you a happy belated birthday,
Even though I'm late!
Hope it was wonderful!

bill moritz

http://www.poemhunter.com/poem/happy-belated-birthday/