Rory: You can't repopulate somewhere with just women. You need blokes.
Amy: She's got blokes in the canal. She said she has 10,000 husbands waiting for her in the water.
The Doctor: Only the male offspring survived the journey here. She's got 10,000 children swimming around the canals, waiting for Mum to make them some compatible girlfriends. Ehhh. I mean, I've been around a bit, but really, that's, that's... ehh.