The Prophet (may Allah's peace and blessings be upon him) was more bashful than a virgin in her boudoir. Whenever he saw something he disliked, we could perceive that on his face

Abu Sa‘īd al-Khudri (may Allah be pleased with him) informs that the Prophet (may Allah's peace and blessings be upon him) was more shy than a virgin girl who has not married and deals with men while she is veiled in her house. His shyness was so intense that if he disliked something, his face would change and he would not speak. Rather, his Companions would recognize his dislike of it through his face.