This role-play is performed by adults. When my older childhood friend and I were little, we used to take baths together, but now that he's an adult, for some reason he wants to take a bath together for the first time in a while. The older sister who forcefully entered the bath looked at my erect dick and said, ``I thought it was going to get really big...'' It seems like she was expecting my dick to become huge, and was overjoyed at the result. Moreover, I have been trying to enjoy that dick! She buried her face in my confused crotch, sucked my cock, and...