Why did Dwayne Johnson gift Rob Gronkowski underwear?

Dwayne Johnson has formed several friendships across different industries because of his various roles in the business. One of his most famous friends is none other than NFL star Rob Gronkowski.

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Actor Vin Diesel Is Envious Of Dwayne Johnson's Success

my new plaid pants: Colin Forth Farrell

Kym Johnson's Husband Robert Herjavec Is 'Supportive' Of Her Career

Celebrities Oversharing In Interviews

Dwayne Johnson Bashed For Saying It Was His First Time Trying In-N-Out

Britney Spears Claims Her Sons Would 'Ditch Her' On Christmas

Rob Gronkowski Says Taylor Swift Is 'Great' For The NFL

Hoda Kotb Exposes Jenna Bush Hager For Never Wearing Underwear

2011 in Sport: The year in lip

Michael Strahan Reveals His Teeth 'Gap Is Here to Stay