R&B star Brian McKnight has recorded a vulgar new tune for a porn video website.
The singer agreed to write a racy track for YouPorn.com to thank web bosses for helping to sell a tongue-in-cheek song titled If You're Ready to Learn, which he released in April (12).
MCKnight, known for his romantic love songs, debuted the sexually suggestive tune in a video he posted online, in which he offers sympathy to women who are left unsatisfied in the bedroom by selfish lovers.
Fans were not impressed by what they thought was the star's new musical direction and MCKnight was forced to admit it was all part of a prank.
But he could find himself facing more criticism once devotees hear his latest work for YouPorn.com.
A clip of the controversial track has been obtained by Tmz.com.