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Unfortunately, it then also kills him.

Shocked Maria Layton, 43, spotted the creepy crawlies after opening the bag of yellow fruit she bought from Tesco.

She found the bananas, shipped from Costa Rica, were infested with eggs from the Brazilian Wandering Spider - the most deadly in the world.

As soon as she discovered the cocoon they started to hatch so she quickly put them in a sealed container in the freezer and called Tesco customer services.

The species is deadly and its venom can kill a human in just two hours - but can also give male victims a painful four-hour erection.

Its venom is currently being studied for use in erectile dysfunction treatments.

Mother-of-two Maria went to open the bag for her eldest daughter Siri, six, but noticed there was something funny on the side of one of the bananas.

**CLICK HERE TO SEE MORE OF THE WORLD'S DEADLIEST SPIDERS**