It is to be a person who lives in isolation from and has limited knowledge(знание) of what is happening in the world around them. Used to describe an ignorant or obtuse person. Usually someone who lives in the basement of their mothers house.
Someone who spends too much time playing Farmville(веселая ферма) on Facebook.
Often someone glued(приклеенный) to their television or computer screen.
ignorant [ˈɪɡnərənt] невежественный; необразованный;
obtuse [əbˈtjuːs] тупой;