What To Write In A Colleagues Birthday Card Birthday Card/Poem Help?

Birthday Card/Poem Help? - what to write in a colleagues birthday card

The birthday of my colleague tomorrow approaching (yes - even - no, not twins, strangely enough) - and I really need some good ideas of what to write in their birthday cards.

I hoped that perhaps a short poem or funny, but laugh at joke writing.

Ideas? Any site that you would recommend to be able to?