I read an article written by an inmate who explained how they'd form dice out of toilet paper (because dice were banned in his case) to play D&D. I assumed that was the case in most facilities.
You're marginally less likely to roll a 7 with a single weighted die.
My reasoning: if you use your weighted die, whoever you're gambling against might figure it out. Now they're pissed, they're gonna give you the beat down. But you're packing, and OH SHIT YOU DIDN'T MEAN TO HIT HIM IN THE HEAD YOU WERE AIMING FOR HIS LEG SHIT SHIT and now you're serving jail time for manslaughter and dice aren't allowed in jail, thus you won't be able to roll any 7s for a while.
Once something is posted publicly, there's no "privacy" about it. Disappearing messages and stuff like that doesn't really help. There's nothing to be done about content scraping (which has been going on for decades).
"Listen honey, mommy raised you pretty much on her own because the patriarchy normalized men not contributing to the nurture of their family, and now mommy is one ring stain away from a total mental breakdown complete with arson, okay?"
Also, Wave Race 64 (1996) is sort of entirely based on that... but the water physics were pretty cool at the time, and there were even parts where you could take a jump and dive under obstacles.
"So, how have things been since our last session?"
"Well, my motivation is definitely not dead, but... I'm not sure it's completely alive either. I saw a video on my feed about crocheting and I went on a sort of... binge? I've never crocheted before in my life, but I kinda made half of an afghan in like 2 days and then got distracted and didn't finish it. Is my inner will... undead?"
Once again, D&D improves society.