The phrase "gotten someone the horn" is a slang expression that means to sexually arouse someone. There are quite a few synonyms for this phrase, including "turned on," "excited," "stimulated," and "titillated." Other synonyms include "horny," "lustful," "desirous," and "eroticized." These phrases all express the same sentiment of sexual arousal and stimulation, but some may be more appropriate than others depending on the context and tone of the conversation. Ultimately, it's important to choose the right synonym for the situation and avoid using language that could be offensive or inappropriate.