Calendar Onesie and funny story

I don't remember if it was this board, but I saw a birth announcement that included a onesie with the babies birthday circled, so I am planning to make one.  This is my "test", which I plan to give my bf who's DD is turning 1 in February.  I just need a red sharpie to circle her b-day.  Our resident model is wearing the onesie (he also helped with our carseat check). 

My dorkie DH got so excited about how easy it was to make these that he made a onesie that says "I am a mean, lean pooping machine", complete with a cartoon image of poop.  I laughed hysterical and I just hope she never leaves the house wearing his shirt!!!