Fox host Greg Gutfeld described people who “find sending pictures of Obama dressed in, like, native gear to be amusing,” as online trolls. Gutfeld’s description fits Fox host Bill O’Reilly who, on July 6, aired a segment questioning President Obama’s “emotional attachment to the Muslim world” by showing photographs of Obama dressed for a traditional Muslim wedding for his half-brother in the “early 1990’s.”

JUAN WILLIAMS (CO-HOST): The internet is a remarkable place, but it can have its down sides. With a free flow of information also comes a free flow of opinions, and not everyone is engaging in polite discourse online. There are a lot of these so-called trolls out there who using the web to threaten and to harass -- 

KIMBERLY GUILFOYLE (CO-HOST): Greg.

WILLIAMS: -- Time Magazine has a new cover story about it, and, you know, there so much interesting here, so Greg, I'll just open the door.

GREG GUTFELD (CO-HOST): Oh, to me? A side benefit is a troll online means one less troll outside, and you can ignore a troll online, you can't on the subway. There should be a test. If you don't know you're a troll, when you tweet, do you tweet sometimes in all caps? Do you mention somebody's physical attribute? Do you use the “B” word or “C” word towards a woman? Do you use an “N” word towards somebody like Juan? Do you find sending pictures of Obama dressed in, like, native gear amusing? Do you like to send pictures of ovens to people who are Jewish? That makes you a troll. Now, you can tweet at me whenever you want and I can diagnose, I can understand the troll disorder better than anybody.