The twins who took part in the infamous donkey semen/urine stunt on "Fear Factor" that never aired are now being courted by an adult website -- but don't worry ... there are no animals involved.

Twins Brynne and Claire Odioso -- who drank the urine and semen, respectively -- have been offered a gig by the folks at MyGirlFund.com ... a website where girls get on camera and chat about politics (or something like that).

The site wants the girls to join their team, where they will have "the platform and tools to earn $50,000 or more quickly in a respectful and empowering environment."