Kurt looked human except for the big red conical shaped penis sticking out of his fly. He let his bitchboi lick it. As soon as she tasted her pack master, she went into full on heat. Her pussy juices flowed. Kurt briefly lost himself in the scent. He instantly was hairier, but he willed his ears, snout and tail to stay human.
Kurt threw Chad on the floor. He went behind her, mounting her doggy style. As they knotted, Chad rapidly went full canine. Kurt managed to stay mostly human. He laughed as Chad's wagging bushy tail slipped under his shirt and brushed against his abs.
A few times, there was pounding or angry voices from outside the locked bathroom door. Kurt had posted an official looking out of order sign on the door when he entered.
When Kurt finally unknotted, Chad was golden retriever. He wiped his lupine cock dry on Chad's fur, then tucked the now soft human penis back inside his trousers, and zipped up.
He gathered up Chad's clothing and backpack, while Chad waited impatiently expecting to change back into a man. She looked concerned as Kurt stowed Chad's stuff in the empty gym bag Kurt brought with him.
"Oh, you won't be needing this stuff for at least 3 days, girl. That's about how long sperm live. If I got you pregnant on the first try, you will remain a canine for 60 odd days gestation, and then about 9 weeks more until the pups are weaned. If you're not pregnant, you'll be human in about 3 days," Kurt explained as he fastened a leash to Chad's collar. He continued, "Now we will go to the vet to get you chipped and get your shots."