someone who feels guilty about their affluent lifestyle and their being too busy to really do anything about the plight of the world, so they join all the groups on Facebook like "if 1 million people join this group, I will FedEx a sandwich to a kid in Africa" or "April 23rd, 3:58pm, international minute of silence in solidarity with all the people who couldnt talk for a minute because of fucked up situations". Dont get me wrong, I am all about working for change in the world and giving help to those who need it the most, but come on people, do you really think your Facebook group is going to make that much of a difference?!
Jack was too lazy to attend the food drive so instead he joined 10 more Facebook groups. What a Facebook Philanthropist.