British actor Idris Elba has laughed off speculation about the size of his manhood, blaming a microphone wire in his pants for creating the big bulge he was photographed with while filming in London.

The Thor star's crotch became a hot topic among fans online this week (ends08Aug14) after images obtained by WENN, depicting Elba on the set of his upcoming movie A Hundred Streets, went viral.

In the snaps, the actor is featured walking down a street in a tight-fitted tailored blue suit, which appeared to suggest he was well endowed.

However, Elba has since taken to his Twitter.com blog to calm the fan frenzy, admitting the bulge in his pants was not actually his penis.

In a post on Saturday (09Aug14), he wrote, "The good news is i got a s**tload of (new Twitter) followers. The bad news is, that is a mic wire. #egowentintospaceshipmodethough (sic)".

He then joked about landing a modeling gig as a result of the headline-grabbing photos, adding, "Calvin Klein called my mobile, they want me in their next campaign. Foot long john's Coming Winter 2014."