Part 1 is here: https://old.reddit.com/r/gonewildstories/comments/cz9ihd/my_girlfriend_and_i_had_fun_with_my_coworker_and/
The belt wouldn’t have lasted two minutes. Amy and Michelle were back on each other right inside the door of the house. It wasn’t their continued make out session that would have made the belt come off though. It was the realization by both women that they had to piss really badly. They went to the bathroom. After two flushes of the toilet, Brandon suspected that some things were happening without us. Since no one had locked the bathroom door, he was able to prove his theory correct by throwing it open and revealing Amy and Michelle in a lip lock. Amy’s jeans were down around her ankles. Michelle’s skirt had been pulled up to her hips. The angle I was looking through the door, and Brandon being partially in the way, kept me from seeing much at first. He stepped aside and jokingly said, “I think they’re trying to do this without us.”
Both women simultaneously protested that. One said, “Uh uh.” The other said, “No we’re not. Get in here.”