More than happy to entertain Trixie's request, Don held onto her horn more tightly within the entirety of his grasp before roughly thrusting his cock forward into her mouth. Trixie let out a loud, muffled moan *Mmfph!*, and her entire body seemed to tremble from Don suddenly grabbing her horn fully.
She quickly raised one hand and held Don's wrist, trying to pull it away from her horn, but it didn't budge. He simply looked down at her and said, "If you want me to stop, just tap my thigh twice. Until then..."
Don trailed off, then suddenly thrust again, pushing the entirety of his cock into her mouth and down her throat. *Cough~* *glurk~* Trixie coughed slightly from the suddenness of the action, and a mix of spit and drool could be seen coming out of the corners of her mouth. Despite this, she still didn't tap Don's thigh.