Nurse Katie shows a guy into a cubicle at the sperm bank and then explains that she will be sitting in on his donation today. He is quite shocked and isn't keen on stripping naked and jerking off in front of her but she tells him it is quite normal. He reluctantly undresses and she passes him some porn mags to jerk off to. When she sees that he likes big tits, she starts showing him her own huge cleavage and his cock gets rock hard. As she opens her legs and lets him see up her skirt he quickly makes a big sperm deposit right into the cup for her!