"Age should not be a factor. As long as I'm enjoying the game, my body and my mind are going hand in hand together, then it works."
On his own admission, Tendulkar had to use the knife close to 15 times on the day starting from a private function organised by the Mumbai Indians.
"It's embarrassing to keep cutting cakes... 40! I know. May be, I think close to 15 or so," Tendulkar said laughingly after cutting a 40-lb cake specially ordered by the Cricket Association of Bengal.
Tendulkar, who has got almost all the batting records to his name apart from Brian Lara's highest Test score, also rubbished talks about imminent retirement saying age should not be a factor.
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"I don't think I'm 40!," he joked. "The moment you start looking at your age you start shaping accordingly," he said.
Tendulkar made his debut way back on November 15, 1989 in a team captained by Krishnamachari Srikkanth as he now plays against his son Anirudha (Chennai Super Kings) in IPL.