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Maybe he likes the suspense, enjoys watching others fret about his performance, or genuinely could not kick his game up a gear.
That was until yesterday at Murrayfield when he played a significant role in the All Blacks' 51-22 victory to maintain their unbeaten history against Scotland.
Since his World Cup work more than a year ago, Weepu has been on a rocky rugby journey. Sure, he was still an All Black but that selection was lineball and an act of faith from a panel who believed they could trim the halfback down and supersize his skills again.
It has taken some time but perhaps the 67-test veteran got over the hump at Murrayfield.
He had just his second test start this year and for an hour he ran with the heart of an athlete and played for the team and with his instincts. He dug deep, he made the rucks, he whipped out streams of passes and still had time for a playful running dodge or two.
"I thought it was the best game I have seen him play for a long time," backs coach Ian Foster said.
"The things that he has been working on, he did very well. He was quick to the ruck, we have known that if he is quick to the ruck and clears the ball well then the rest of his game and his natural decision-making has always been outstanding."
Several All Black tries were the result of Weepu reading the defence and reacting to it.
The halfback looked weary later under the grandstand as he talked about the test but he claimed he had a sore back.
His own counsel had been not to think too much, just play.
"I think if anyone goes out there and play then everything is clear and you know what you are doing.
"If you go out there and complicate things by thinking about what you are going to do next, then it can get on top of you and put you off your game a bit. So just go out there and play footy."
The first half had been quite aerobic and at times the All Blacks had been under the pump. However when they got the basics right they were able to dominate the test once more. When they played how they had practised, their patterns started to flourish.
Scotland were very physical, that was no surprise. They were one of the few sides in Europe who liked to play with the ball and did not kick away much possession.
Weepu hoped he had given the selectors a decent reminder of his pedigree and now it was up to them and Aaron Smith this week against Italy.
"It was just me trying to repay the faith they have shown in me. It might have taken half the season for me to repay them but I am happy they have given me the opportunity and I have made the most of it."
Weepu had some goals on this tour. He had ticked one box against Scotland, now there were others. He had made a start, he felt good - he wanted to play more rugby.
- By Wynne Gray of the New Zealand Herald in Edinburgh