The obvious choice

Pat walks campus with the ray gun in his pocket trying to figure out his next swap. "5 more...." he thinks trying to act casual. A busty girl seems tempting, so does the clothing of the girl running. Since allowing himself the changes, it all seems too much.

Eventually he ends up at his dorm again. Sure enough Craig and Cara were taking their after noon nap. That's when he sees his next swap. Apparently Craig is hung and having a good dream. Laying on his back, Pat can easily see Craig is longer and thicker then himself. He quickly swaps dick sizes with his roommate and marvels at the weight of his borrowed dick. Knowing Craig and Cara have their usual date night, Pat decides to wait to test his new swap.

While coming back from the bathroom a few hours later, he can't help himself. A girl is walking down the hall. She has the biggest boobs he has ever seen. As she looks for the room she is trying to find, Pat zaps her. Feeling the weight of her chest, he knows he has to make it a twofer. He also swaps their clothes from the waist up. He goes back to his dorm room adjusting his new bra strap as Craig and Cara leave for their date. "Two swaps left..... I mean, what is left to try?" Pat mutters as he sits down at his computer to try out his new changes solo.