Responses
I can deal with that concept in stories (stale due to overuse, but whatever works, works), though in real life my "I don't want this" leads to similar physical reactions - like a clenched fist and a knee to the groin.
Yaoi logic:
Uke: I don't want this!
Seme: but ur body is reacting
Which basically means u can roughly funk him as long as he gets hard, it isn't considered as rape