This is the moment a bikini model lashed out at a presenter with wandering hands as he demonstrated how to apply suncream.

Brazilian TV bosses opted for a bizarre combination of a pretty brunette in a tanga bikini bottom, tiny top and high heels and a cheeky male presenter to teach viewers how to protect themselves from sunburn.

Stunning Rayssa Teixeiro Melo, who has built up a huge fanbase on social media with pictures of her athletic body, warned him to leave her exposed backside alone as his hands strayed from her well-toned stomach and the tops of her legs.

This is the moment a bikini model lashed out at a presenter with wandering hands as he demonstrated how to apply suncream

She grabbed hold of his wrist and told him: 'No, that's my bottom,' before signalling the area as off-limits with her hands and adding sarcastically, 'Do you know this part, the bum?' as the show's two other presenters looked on uncomfortably.

The unnamed fumbler seemed to ask the model for permission to rub some more suncream on her leg and engaged in small talk in an apparent bid to calm her nerves - before going for her bottom again and earning himself an immediate slap round the face.

The programme continued for a few moments - but Rayssa looked as if she'd rather be anywhere else, calling the presenter presumptuous as he tried to continue his work and struggling to maintain the smile she had shown earlier in the broadcast before exploding as he touched her again where he shouldn't.

Angered: She threw studio cups at him from a nearby table and threatened to hit him again

She ended up walking off the set after labelling him a 'clown' - but not before having to be separated as she threw studio cups at him from a nearby table and threatened to hit him again.

The incident happened on the health section of a Brazilian TV show on Wednesday.

Rayssa made no mention of it on her Facebook or Instagram pages, where she has built up a large following with a series of pictures showing her at work and play.

One social media user said: 'Good on her. She was making sure she got respect.'