Sound like a spoof?  It isn’t.  An embryo was conceived via in vitro fertilization in 1990, and then frozen at the zygote stage (single cell).  After nearly 20 years, the embryo was donated to a woman who was infertile.  The embryo was implanted, resulting in a live birth to a 6 lb 15 oz baby boy in May 2010. 

How does one “date” a child like this?  Technically he is already 20 years old before he ever celebrates his first birthday.  Interesting.