You both go into the lake and get at it.
When the two of you finished you felt a tugging at your body "What is happening Amanda?" you ask her but she replied with"What me, I thought it was you who was doing this" the two of you rush out of the lake only to trip over in the knee deep section. , you both wind up swallowing more water.
When you get up you find that you are taller but you're wider you look to Amanda only to see her very close. You look at her body to see that your bodies are mixed up.
You are now part of a 20'4" anthro-lizard with 2060 pounds of muscles, a 9'8" tail and what shocked you the most 48GG breasts. Your body is scaled like a reptile but more like a snake.