You realize your mom is too busy to realize what's going on in the back seat so you slowly rub your sisters mound through her panties. Her panties begin to get moist as she fidgets in her seat. Unable to hold back, you pull her panties to the side and slide a finger in slowly. Your finger moves in and out getting wet with her juices; you sneak a second finger in and she bites her lip slightly.
A little worried, you turn your attention away from your sister for a second and noticed your mom was still to busy dealing with her phone conversation and traffic to worry about you two. Just then your sister leans over and whispers into your ear.
"Hey big bro... maybe we can get away with a little bit more while mom's not paying attention. Think you can be quick about it?" |