Day 134/20. A double double.

Egg on toast for my breakfast this morning.
We have some farm fresh eggs given to us a couple of days ago....
I usually only have a single egg. Today as they were quite small I decided to have two.
The first egg cracked into the pan....WOW, a double yolk. Then the second cracked and a double WOW, a second double yolk.
What are the chances of that?