I heard this from an internet chat room, so you tell me if it can be true or just another internet urban legend:

A group of male and female subs were having a BDSM sex party with their respective masters and mistresses. At the end of the night, when those mistresses are done whipping out of those male subs, one of them who was allowed to get himself off, his mistress made him licked off his own sperm off the floor.

Then he was asked to lick the pussy of another female sub.

Eventually the party was over. One or two weeks later, he got a call from his mistress that he made that female sub pregnant, apparently, he didn't swallow all of his own cum and some were transferred from his tongue to that female sub's pussy.

Can this story be true?