Alphas can order their omegas around and omegas have a biological impulse to obey their Alphas.
Any couple really gets off on this and they both like it when the Alpha uses it in the bedroom. One day they're doing something kinky they both like and have done before (maybe edging or overstimulation or something) and the Alpha orders something along the lines of "don't tell me you don't like it" and it's all good and well and they have their fun except the order sticks. And the next time their doing something new (maybe pain play or degradation kink? Or if a female or intersex male omega maybe its anal for the first time), and the omega realizes they don't like it but because of the old order they find they can not communicate this to their Alpha. The Alpha gets rougher and keeps going not knowing that their omega wants to stop (crying during sex is normal for them sometimes). At the end the Alpha cuddles their omega thinking they've both had a good time and talks about how they can't wait to that again and the omega soaks up the affection but finds they still can't fight the impulse to keep quiet about the fact that they do not want to do it again.
Any/Any Alpha Omega, con to accidental dub con
Any couple really gets off on this and they both like it when the Alpha uses it in the bedroom. One day they're doing something kinky they both like and have done before (maybe edging or overstimulation or something) and the Alpha orders something along the lines of "don't tell me you don't like it" and it's all good and well and they have their fun except the order sticks. And the next time their doing something new (maybe pain play or degradation kink? Or if a female or intersex male omega maybe its anal for the first time), and the omega realizes they don't like it but because of the old order they find they can not communicate this to their Alpha. The Alpha gets rougher and keeps going not knowing that their omega wants to stop (crying during sex is normal for them sometimes). At the end the Alpha cuddles their omega thinking they've both had a good time and talks about how they can't wait to that again and the omega soaks up the affection but finds they still can't fight the impulse to keep quiet about the fact that they do not want to do it again.