This runs on consent, ongoing — not consent, archived. A yes to trying is not a yes to continuing, and either of you can stop at any layer, including mid-movement. The stop signals are part of the setup precisely because words get hard at exactly the moments they matter most.
Risk, stated honestly. This is a middle-tier-risk practice that runs on preparation: the two physical risks with names are pain and tearing from rushing (the anus doesn't self-lubricate, and sphincter tension is a documented pain factor) and retention of baseless objects — rare, with no population-level numbers available, but serious when it happens, and the flared base exists because of it. Neither risk is a reason not to try; both are reasons the structure above exists.
The emotional layer is just as real. He's the one exposed — in position, and often in what it might "mean." Qualitative research documents the stigma concerns heterosexual men carry about receiving anal stimulation; if this practice clashes with your values or his sense of self, that tension is documented and human — and not trying is a complete answer. What isn't optional: no mockery afterwards, and no telling others without his explicit agreement.
One scope note: the research this piece draws on comes mostly from samples of people with prostates who already have receptive anal experience — the specifics transfer to a first attempt only partially. The structure — small toy, flared base, lube, his pace, feedback — is what carries the practice; the numbers describe other people's journeys, not a forecast of his.
A second scope note, editorial: this piece follows the most-discussed configuration — a woman wearing the harness, a man receiving — because that's where the questions and the worries concentrate. The practice itself doesn't belong to that configuration: any pairing of bodies can wear and receive. The safety structure here transfers as-is; the pronouns are just the ones this article happens to use.