PMSL - don't you mean to colour-co-ordinate the nappies? DS has blue nappies, I'd have to buy in some pink for a girl. OK, so most are white/cream but there are blue covers and blue nappies and girls would need pink and flowers and fairies and cr*p like that (OK, I have ONE pink and ONE lilac nappy, but I need more than that!)... I want to buy more nappies, can't you tell LOL.

How about "I'll find out and not tell you so you can have your special birth?" or "How about I give birth without you, that's what I want... so I get the gender now or the birth alone, up to you which you want me to give on."