Xperia Z 5 here . Pretty happy with this . <| sep |> The cum box <| sep |> Punishment should be reserved to modify behaviour , if you don ' t want to modify anything don ' t punish . That said let me speak from experience if you believe you do intend to modify behaviourThis depends on the relationship , not all subs will be affected like this , but often when they know it is a punishment after starting with a lecture the pleasure from the beating vanishes if your sub cares deeply enough about how well they serve and follow the rules you lay out and not wanting to disappoint their dom . The only time my last partner punished me when I was her sub was horrible . I normally craved her whip , and without someone to keep my masochism in check I will often pursue pain until it leads to being self destructive , but I still remember that whipping from years ago and hated every moment of it . It wasn ' t fun when she whipped me that time . I shudder at the thought of each lash . Just the memory of it is like white hot irons across my back . I broke a big rule and lied . I had failed her and betrayed her trust and knew it . As a result it drained all the pleasure I would ' ve taken in the pain . If I wasn ' t the type to accept the consequences of my actions I probably would ' ve had to use the safeword there , in fact I did need to call for a pause until I had recovered enough to give my consent to finish me off . To be honest it wasn ' t the whip that hurt , it was knowing I failed her , the fact I let her down , her tears while she carried out her part of the punishment . It wasn ' t something she wanted to do , however it was too major a transgression to go unpunished . The only lash I took pleasure in was the last one because it meant it was over and I could comfort my mistress and prove I would do better there after . I can tell you that corrected behaviour immediately and permanently . Point being if your sub knows the punishment isn ' t something you want to do but know you need to do , they will be less likely to enjoy it and less likely to do anything to merit it again .