A blowjob

You see the largest erection of your life. Mark is sitting on the edge of the hot tub and Jen is still inside. Jen’s mouth is wrapped around Mark’s cock. She is trying to fit it in, but Mark is just too massive, she can’t even get it half way down.

“I guess there won’t be much convincing to do,” Martha laughs.

Mark looks over at the two of you and grins. Jen is focused and doesn’t realize the two of you have returned.

You clear your throat loudly, “Eherm!” Jen looks up and sees the two of you. She has a sheepish look on her face.

“You couldn’t even wait until we got back?” You say jokingly.

“Well, obviously you can see how large his cock is,” Jen starts. “So, I asked if I could see it hard so I could really see what he was made of. So he started stroking, and it was getting hard, but I could tell he needed some help…” Jen grins.

You realize that even though you’re wearing a towel around your waste, you are rock hard underneath.

“Don’t worry, Jen, you’re not the first who has wanted to try him out,” Martha reassures her. “I think maybe we should find somewhere more comfortable.”