No seriously, this is kinda unprecedented. We should get some scientists in on this. This birthday card is letterpress printed on a vintage Windmill press in Raleigh, NC. Each card is 100% cotton paper, blank inside, includes a kraft envelope and cello sleeve. A2 size (4.25" x 5.5") Categories: birthday card, funny card, anniversary card, funny, greeting card, funny greeting cards, sarcastic, sarcastic cards, sarcastic greeting card, sarcastic birthday cards, clever cards, greeting cards, birthday cards, funny greeting card, card, cards, birthday gift, funny birthday card, gifts, gift, gift ideas, anniversary gift, funny cards