Butt Boy (Insult) A servile underling. Especially one who is also a sycophant. A suck up. A butt boy does his Master's dirty work.

Earlier this week, Sean Penn wrapped filming of the biopic on Harvey Milk, shooting a scene on the steps of San Francisco’s City Hall in which Penn recreated a famous and fiery Milk speech. Afterwards, since he had a captive crowd of extras, Sean Penn took a moment to jump up on his own soap box:

"I almost wish Jerry Falwell were alive to see this. Almost," Penn shouted to the crowd. After dropping some names of conservatives who are still with us - "Bill O'Reilly, who is too stupid to talk about," and "Sean Hannity, the butt boy of Rupert Murdoch," Penn said, "We know something more. We know their end is near." (Source)

If you’ll excuse my indignation here, but while I’m behind Sean Penn’s sentiment, when you’re portraying the first openly gay politician in America -- a man who 30 years ago bravely tried to push pro-gay legislation before he was gunned down by a psychotic homophobe who got off using the Twinkie Defense  -- and when you’re talking to a huge crowd of San Franciscans simulating a Gay Freedom Parade, then maybe it’s not the wisest thing in the world to refer to Sean Hannity  pejoratively as the butt boy of Rupert Murdoch. After all, the origins of the insult, butt boy, are homophobic in nature -- as in, one who services his bossman anally.