Friday 13 April at 08:35 : Apr.13 (GMM) Narain Karthikeyan has revealed he is sick and tired of what could be described as 'cucumber-gate'.

After the Indian collided with Sebastian Vettel in Malaysia three weeks ago, he was twice shown the middle finger, and called a "gherkin" and "idiot" by the reigning world champion.

But that's when the real fuss began, as the world's media became involved -- a mischievous German reporter even presented Karthikeyan with a cucumber in China.

"It's done and I would have preferred for it to stay private," he is quoted by the SID news agency.

But the affair is threatening to drag on even longer, with Vettel telling reporters in Shanghai that Karthikeyan had apologised to him.

He did not say if he has apologised himself.

"Sebastian can say what he likes," HRT driver Karthikeyan responded.

He said the incident had become an affair of "unbelievable proportions".

"It's crazy; I was questioned about it day and night," he said.

"It's become too much -- I don't want to talk about it anymore and I'd prefer if I never even thought about it again."