One character is domineering and is in control of whatever scenario that is unfolding. The domineering character can verbally humiliate their partner in various ways. They can mock their partner's arousal, tease the character about their physical appearance, tease the character for the sounds they are making, maybe laugh about their partner's obvious arousal as they fuck them, bring up past sexual partners that were better than the one they are fucking, mock the partner's sexual performance. They could tell the partner that they are pathetic, embarrassing or boring. They could laugh at the partner's sexual inexperience or mock whatever kinks or fetishes that the partner has, telling them how weird or strange they are. Anything that makes the other person feel embarrassed, unsure or ashamed. Despite the conflicting feelings, the submissive partner will still climax, giving the domineering partner something else to mock them for. The verbal humiliation is consensual. If the characters have an ongoing relationship, then the verbal humiliation should be accepted as being a part of their dynamic and does not need to be directly adressed or explained as being previously agreed upon. However if these are two characters that do not have a pre-exisiting relationship, the verbal humiliation can be agreed upon before or after the sex, with one character checking in on the other being okay with verbal humiliation.