My dh and I both wanted a third but it felt irresponsibly in some ways and daunting to start all over. So we gave it a half hearted month between the end of my bc prescription and his up coming vasectomy and HERE I AM!!!:

How to tell all the family (who know of the upcoming vas.) and therefore assume we're set with two. It will be a shocker.
Then there are my parents- I work seasonally and my mom watches my two kids and is slightly overwhelmed w/ my dd (2.5) who you could describe as fiery, energetic and who knows her mind WELL. Luckily work is slowing so my mom gets a break and will maybe welcome the news a bit more.
I want to wait for Christmas to tell (photo of my ds and dd holding the empty car seat with sign "coming soon") but I always have a glass of wine with dinner at my parents and that will be noticed long before x-mas.