The Internet service that breaks Iranian election news and broadcasts Michael Jackson funeral arrangements in real time, Twitter is also home to pop-up trends. "Trending Topics" help the news media and marketing agencies identify what's hot RIGHT NOW, an important piece of information when the news cycle updates every quarter hour. So what was Friday's No. 1 trend? "#uknowhowiknowuregay"

With nearly 17,000 mentions, #uknowhowiknowuregay was a piece of brilliance created by the rapper Fabolous, started after he watched The 40-Year-Old Virgin, which included the above scene.

Example #uknowhowiknowuregay tweet: "u made a 'Single Ladies' (Beyonce) video wit ur two boys.

So true! And yet:

Like the examples used in Virgin, not all such tweets under this hashtag are, in fact, identifiers of one's gayness. Luckily, somebody created an entire breakdown of all the misleading mentions. Like how "u wake up with your hands, lips or ass cheeks wrapped around another dudes d!ck" does not mean you're gay, but that you were raped.

See the difference?