My master has brought up sucking on mints before/while oral sex for both of us to intensify the pleasure. Is this ok hygenically? Second, this is a new D/s relationship and he is (and he's said this) hopelessly uncoordinated. I was wondering if there are certain risks regarding cuffing. In the past my arms have almost gone numb, or have hurt from certain positions he's tied me down in. It wasn't his intention either, I think he'd prefer me comfortably cuffed. any other tips would be helpful regarding some beginner things. thanks!