Had to laugh over this one...
There's a bit of an age gap between DP & I (me 30 next month, him already 50), and DP has 2 DSs (13 & 5) who he has custody of. A male friend of ours who's closer to DP's age than mine and moved away about a year ago was back up last weekend and DP told him that I was pregnant.
Friend: "Oh well, these things happen"
DP: "No, they don't just happen. This was very much planned"
Friend (blushing a lot): "Sorry, sorry! I didn't mean... I mean... Congratulations!"
DP told me after and said he found it really funny how embarrassed our friend was, but how daft it was that some people wouldn't expect us to want to expand our family just because he already has 2 boys from his ex.