My friend keeps saying he is Hindu, but i have no idea what that means.
Hindus
Hindus () are persons who regard themselves as culturally, ethnically, or religiously adhering to aspects of Hinduism. Historically, the term has also been used as a geographical, cultural, and later religious identifier for people living in the "Hind" (Indian subcontinent). 
The historical meaning of the term "Hindu" has evolved with time. Starting with the Persian and Greek references to the land of the Indus in the 1st millennium BCE through the texts of the medieval era, the term Hindu implied a
to gangrene in August 1953. She became severely depressed and anxious, and her dependency on painkillers escalated. When Rivera began yet another affair, she attempted suicide by overdose. She wrote in her diary in February 1954 that "they have given me centuries of torture and at moments I almost lost my reason. I keep on wanting to kill myself. Diego is what keeps me from it, through my vain idea that he would miss me. ... But never in my life have I suffered more. I will wait a