In my family there are three girls (including me) and one boy, my younger brother. In DH's family there are three boys (including him) and one girl, who is the oldest. So we have the opposite! Now DH and I have 1 of each, but will soon have a another girl, so girls are dominating in our little family. We are exactly mirroring my sister's family - she has boy, girl, girl just like us! But SIL has had more boys than girls - girl, boy, boy, girl, boy.

MIL is one of 7 girls, no boys! Her dad definitely had stronger girl sperm I think!

Anyway I take all this to mean not very much! All it seems to show me is that these things are pretty much random. DH's father is also a twin, so there is of course the joke that one of us will end up having twins, but so far we have all had singles.