Possible Clues:

• Spring after spring, it never fails to surprise me
• Surprised saying you and I will double up
• 'Look what we have here!'
• You and I will shortly come at the double. Fancy that, now!
• A couple of water holes. We will shortly fancy that!
• We shall shortly be twice as healthy. Fancy that, now!
• Healthy source of water? Fancy that!
• Fine source of water, I say
• What a surprise -- both sides fit
• Repeated accident location in nursery rhyme? Fancy that!