I've had a "nipple-sucking duty" on my side for the past three years! I met the nurse Mina when I was hospitalized. She was sucking some old man's dick on the emergency stairs in the middle of the night. I immediately used that as a bait to blackmail her, and she started sucking my dick right away! Since that day, I've been training Mina, who can't resist pressure. I'll make her play with my sensitive and delicate nipples, and I'll teach the big-breasted nurse how to nipple until I can nipple-suck!