What is it?'Happy Father's Day from your fastest sperm'. Greeting card for dads designed by Twisted Doodles. Printed and packed in Dublin. Twisted Doodles is cartoonist and scientist living in Dublin. What size is it?A6 card with recycled map envelope. Wrapped in a non-plastic compostable sleeve. Take a look at the rest of our father's day cards ahead of the big day. Need a gift as well? Sure we have those too.