Why James Shouldn't Be So Good at Blocking and Silencing Spells
Status
Summary
The Potters and the Weasleys (Molly, Arthur, Harry, Ginny and kids, Ron, Hermione and kids) are having dinner. When Albus spends the night with the girls, James and Hugo manage to have sex. But James is way too good at blocking and silencing spells. When morning comes, everyone's in for a surprise. For some people, two surprises. Or is it three...? Also posted on AO3.