Some of the most serious forms of peer harassment involve groups of men. Men often do things in groups that they would not do alone. They may be fearful of losing the group's approval if they don't go along. Incidents may include Yelling, whistling, and shouting obscenities at women who walk by fraternity houses or other places where men gather.
Many men believe that women view such activities as flattering.
Most commonly, women passing by groups of men may find their sexual attributes loudly discussed and rated by men. Being aggressively disrespectful of women who support women's rights. Male students may interrupt women frequently, often with personal or irrelevant remarks. They may ridicule women when they do speak, thus discouraging or intimidating them from participating. Men may simply frown or groan when some women speak in class, especially if the women are very bright or assertive.