Write calligraphy for my father on his birthday.

First of all, congratulations to your father on his 50th birthday. I don't know what good poems to look for, because I am a poor scholar, but I saw four interesting words some time ago, that is, "I often think about one or two." The source is this. Nine times out of ten, it is the unpleasant things in life, which means "thinking about those happy things often" and "thinking about one or two things often". Your father is 50, and it's almost time for him to enjoy his old age and family happiness. Personally, I think these four words are good, not tacky, laugh!