Speed things up
From Create Your Own Story
"Mmmhhh" you moan. Feeling his hands rub your lower back causes you to arch, rubbing your ass against his dick.
Taking advantage of his distraction, Mindy managed to sneak around behind Sebastian, and quickly wraps her hands around his waist.
"Well, look at what we have here" She says, sliding her hands down his swimsuit, pulling out his 8 inch, rock hard dick. "I think our friend here could use some help". Mindy takes one hand out of his shorts and guides Sebastian's arms up until they're resting on your well positioned ass.