Conception day, colloquially known as C-Day is a day celebrated in northern austria or southern germany, to honor a friends conception. All it usually involves is some friends, maybe some stories and food.
Yo, you coming to my Conception day this year?
Sure man, wouldnt miss it
A party, celebrated in some parts of northern austria and southern germany, meant to celebrate the conception of someone. Usually celebrated smaller than a birthday or not at all, it is often an event in a familiar setting where sometimes the parents even give a quick speech.
Hey man, you going to Martins conception day?
Sure Ill be there