You drop to your knees..

You drop down on your knees and wrap both hands around his stretched tight jock strap. Cowboy adjusts himself and pulls it down for you. "You're in for a treat" he growled lowly. As his jock clears balls, his cock springs to life in front of you. It decently long, but its the thickest cock you've ever seen. Cowboy seems to sense your hesitation and grumbles out "don't worry, I'll loosen you up plenty. By the time i'm done, you won't be able to walk straight." His hand grasps the back of your head and pulls you down to his cock. You eagerly spread your lips let his cock head slide into your mouth. You taste a large drop of pre-cum as you push it further down your throat.

You pull back up and use your tongue to swirl around the head. You repeat this several times and then give your best attempt to take him down your throat. Try as you might, his thickness prevents you from taking it too deep. Still, from his steadily increasing breathing, you know you're doing a good job.

"You suck cock very well, but I'm wanting to bury this dick in your ass. I've got just the idea on how to loosen you up."