You could always follow in the footsteps of the Egyptian woman on the news tonight. She already had 2 girls and wanted a boy and ended up with septuplets - 3 girls and 4 boys!
I had a 9lb 12 1/2 and he filled the cot in the hospital - he roared like a bull and the girl next me had some pipsqueaking thing that was about 5lbs. She'd ring her girlfriends up and say "you should see the size of the baby next to me"