Yuvraj and Pietersen were live on Instagram when the former revealed it.
Former India all-rounder told Kevin Pietersen one of his email Ids still has 'pie-chucker' in it. It all started during India's tour of England in 2008 when Pietersen had publicly called Yuvraj a pie-chucker.
The remark by Pietersen hadn't gone down well with Yuvraj but they later became friends.
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In the recent Instagram live, Yuvraj said, "My email address still has the word ''pie chucker'' in it, I laughed so much when you described me as a pie chucker for my bowling style. I made an email id and included the word pie chucker in that and it is my favourite email address. Sometimes, even my friends go like, hey how are you pie chucker."
"When you know someone hates your bowling and they do not want to get out to you, even if they want to smash you, still they block you. That was the funny part," he added.
Pietersen has been doing Instagram live with different cricketers. He even did one with India's captain Virat Kohli.