[mothered]

"What if we change our grades?" I honestly would be down to do something like this, however, I don't know where to start, or any dangers or things that could leave trail marks,

Seems like you have very little knowledge of the ramifications Involved when performing acts of this nature. I'm speaking from a personal standpoint by well and truly having the capacity to do It.

Unless you're looking forward to sharing accommodation with Big Bubba, and don't mind arranging conjugal visits from time to time, simply put, don't do It.