Formula One driver David Coulthard made a woman TV interviewer blush by refering to her nipples on air. The Scot was talking to ITV's Louise Goodman before the start of the Canadian Grand Prix, reports the Daily Mirror. Cheeky Coulthard was answering technical questions when he told Louise he imagined he was holding her nipples to ensure he was gentle with his car's controls. Goodman asked: "Have you been practising with that pit lane speed limiter?" Coulthard replied: "Yeah I have. I've just been imagining it's your nipples. I'm being a bit more gentle with it when I take my finger off it at the end of the pit lane." Goodman laughed and concluded: "Thank you very much, David", before handing back to studio presenter Jim Rosenthal, who added: "Yes, thank you very much David indeed for that one. That's fantastic."