40-year-old Jeffrey Lynn Graybill netted up to 26 victims in the great Los Angeles area with Craigslist ads claiming to seek sperm donors for “stem cell and other research.” He promised as much as $4,000 a month to the study participants, who were all in their late teens and early 20s.

It’s not clear exactly what he did with his victims’ sex batter. Stick it in the freezer to make cumsicles? Whip up some spunky candied pecans?

Graybill would visit victims’ homes or lure them into an empty apartment he managed and fondle them before collecting their sperm samples. When he failed to pay one of the sperm donors for his contribution, the victim went to the police. Graybill was arrested for practicing medicine without a certificate, faking his identity, sexual battery by fraud and carrying more than three chins without a license.

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