with thoughts of exposition and a flash back

To fend off what was certain to happen Mark focused on the minute details of his own biology.

Male orc reproductive biology has a few unique traits

1. a large vitality

2.we are constantly creating sperm meaning our balls will grow up to five times the size

3.when truly aroused a male orc will let out a musk that arouses females that is especially potent in the groin

4 our penis will grow in size and girth when son we go into heat.

Through years of discipline Mark has learned to trigger or control his musk and size (He had problems with random ladies getting WAAAYYY too close if He got a random boner) so Esla was only treated to a small dose of musk as she stared to lick his shaft her hand slowly fondling his family jewels while she was tail fucking Lucy.

For some reason as Mark watched Lucy twitch and gasp from Esla using her tail on her, his mind flashed back to his past with the slutty dwarf

Mark's POV

the first incident to flash into my mind was from junior year in college when Lucy was feeling her hormones during her final growth spurt she had been so horny and I was just starting puberty ( for some reason I age slowly for a orc) and had gone into heat while we were fooling around at her house she insisted she was fine even though she was still too tight for me to put it in she got on top of me. if her parents didn't come home she might of hurt her self.

I was snapped out of my thoughts by Lucy letting out a sharp gasp.