After a thorough "demonstration", the customer decided to make the purchase. Mark whisks them away and left Steve sprawled on the padded bench. Steve didn't come, but in another life, he easily would have. Guess equine balls require longer attention than the in-store demos provide.
As he gets up to clean off the lube, a feeling of breeziness comes back. His equine asshole feels embarrassingly empty. It's a price to pay for mixing genetics, but his tail flicks over his hole dutifully. It's there to comfort him when that issue comes up.
"Know you like that kinda shit," Mark says as he walks over to Steve's register and slaps his hand on his shoulder. "Had to pull hard; the guy bought the $150 model. Too bad he's ugly as fuck, right?" Steve wants to roll his eyes, but he silently nods and waits for Mark to go preoccupy himself with the shelves again. If it weren't for his body hair and toned musculature, he wouldn't be working here. Honestly, Mark should have to reckon with his attitude more often.
On that train of thought, Steve reaches for his phone and runs a few sentences on Mark through the app, until a good one comes up:
'The sex shop employee is adjusting his ballsack as he organizes condoms by size.'
Steve glances over, and sure enough, Mark's hand is cupped around his human-sized jockstrap. Only Steve has a view of it from behind the counter. There's gotta be something he can write to put him down a few pegs, and on glancing toward the exotic animal toys, he gets his answer and replaces 'ballsack' with 'udder'.
In mere seconds, Mark's jockstrap inflates to five or ten times its old size, as it reshapes itself around a giant, bulbous pouch hanging down between his legs, which seemed to move apart a bit to widen his stance. Mark was none the wiser; his hand is no longer cupping his balls, but instead futzing with one of the teats on his udder above it. As it becomes reality, Steve's mind contemplates whether udders run across genders in the genes of only farming families, or if it's an affliction when working around cows. It's still not fully known, but Mark's physique attracted the shop owner and his usefulness reflected in his positivity with customers.
"You took lunch already, right?" Mark comes over to ask Steve, and he nods. "Cool, then it's my turn. Gotta empty the sack. Be back in a jiffy," He turned into the backroom to change, and Steve smiled as he waddled away.
Mark needing a few additional breaks during shifts to empty his udder rarely bothered Steve unless he was with a customer who wanted to ask their opinion about the bovine products. He really only had experience with equine toys, but was working to gain expertise on the others. In due time.
Anyways, his shift was almost over. He can wait a bit longer, but his tail was communicating his anxiousness. Maybe a handsome customer will come marching in...