"Madsturbation" is a term often used in internet culture to describe the act of engaging in intense or obsessive thinking about a particular topic, usually related to one's frustrations or grievances. It can imply an excessive focus on negative thoughts or complaints, similar to how "masturbation" refers to a self-indulgent activity. The term can also be used humorously to critique someone who is overly fixated on their anger or dissatisfaction without taking constructive action.