Bedtime procrastination

I was just trying to put Setri to bed. He pointed at a glass of water and said 'more', so I gave him some. I put the glass of water back on the side table and he immediately pointed and said 'more'. So I offered him more and he had a sip. By the third time he asked for more I was a bit suspicious of his motives, and I swear I could see a mischievous glint in his eye. By the fifth time he asked, he was so full of water he couldn't bring himself to take a sip- he turned his head with a sheepish smile to acknowledge that his bedtime procrastination plan had been revealed... not even 12 months old and pulling tricks like that already!