Lulu-353: Unable to Resist Her Sister’s Slippery Oil Seduction [UNCENSORED]

When I met my girlfriend’s sister for the first time, she was so cute and had such big tits. I was drawn to her defenseless breasts that didn’t know how to be wary of men, and I couldn’t help but touch her unexplored nipples… I smeared oil all over her fair, firm big tits and massaged her, then started to tease her nipples! Her sister was confused by her first experience of having her nipples teased. Even though she refused, I continued to relentlessly tease her, and even the slightest stimulation made her develop a premature ejaculation constitution, so I had a lot of nipple sex!