David Beckham is fuming after a spoof TV ad of a Viagra-type sex drug started making the rounds in China.The 30-second dubbed clip has used a past footage of the Posh and Becks, in which Goldenballs is heard saying that the drugcalled USA Selikon capsules are his secret weapon.Want to know how I can keep being strong and running on the football field? USA Selikon capsules help me a lot. Its also the secret weapon with which I can satisfy Victoria, the Daily Star quoted the voice, with Beckhams face on screen as saying.A source has revealed that Beckham, 33, is angry over the ad targeting his sexuality.He doesnt find it funny. Davids fair game and can take a bit of a ribbing in the name of comedy, said the source.The source added: But to poke fun at his sexual prowess to plug a product is overstepping the mark.But, according to a sales manager for the drug maker, government authorities in China have approved the ad.Spokesman for the ex-England captain said that footballer was aware of the video,
