Former Home Improvement star Bell often sends barbed remarks to the Baby hitmaker via Twitter.com but Bieber simply ignores him.
However, the young star got his own back on Thursday night by causing a storm at Bell's album release bash.
Bieber stunned onlookers at the event at the Grove in Los Angeles by pulling up in a van and peering out through the sliding side door, causing a huge crowd to gather.
He later posted footage of ...
The Wire star announced the happy news in a post on his Twitter.com page on Friday revealing he became a father ahead of Easter weekend.
Elba posted a picture of his little boy Winston gripping his finger, adding in a caption, "My Son Winston Elba was born yesterday...Truly Amazing."
No further details were known as WENN went to press. Elba has a daughter, Isan, who was born in 2002, as well as another son.