An apprentice was told to rub Viagra on his chest to ahead of steamy sex session with his girlfriend..

Viagra prank

Viagra prank

Richard Davis was advised by his colleagues at a roofing company to mix the libido-enhancing medication with milk before massaging the concoction onto his torso in a bid to look more muscular and impress his partner in the bedroom department during their romantic trip away.

The 17-year-old's colleague Scott Nicholls filmed the moment Richard returned to work bragging about his love life, and the effect of him lathering himself in the creamy substance before getting hot under the bed sheets with his girlfriend, which has been obtained by the Mirror Online.

And Scott was shocked when he realised Richard had listened to his advice.

Speaking to the Mirror Online, Scott said: ''I can't believe he actually did it. He's a bit gullible and we're always playing pranks on him but I'm amazed he actually told us about it.

''I'd been chatting to him the week before and he was asking advice about how to use it because he'd never taken it before and he'd booked a hotel for him and his missus.

''I explained that if he took half the tablet and rubbed milk on it, he could rub it on his muscles and it would make them go hard along with everything else.

''He seemed to enjoy it anyway so maybe I did him a favour.''

Richard has vowed not to take any advice from his boss in the future as he realised Scott was leading him on.

He said: ''It's all a bit new of a new thing to me so I just took Scott's word for it.

''I knew how it was supposed to work but the lads said if I tried it this way my muscles would go hard all over and it would look really impressive.

''It went all watery but I went ahead with it anyway and here we are. I didn't get any complaints but I think that's the end for me and Viagra.

''They're always playing pranks on me because I'm an apprentice but to be fair Scott's a good boss and I've learned a lot from him.''