This week #pizzaRat captured the hearts of meme lovers, receiving as many mentions and retweets as Emmy Awards and Pope Francis’s historic visit to the U.S., if not more.

#PizzaRat dove into the whirlpool of brand conversations on Twitter this week. The YouTube video of a little rat carrying a slice of pizza down the stairs of Manhattan subway station lasts only 14 seconds, but it gained as much attention as Pope Francis' historic trip to the U.S. and the 67th Primetime Emmy Awards.

As a celebrity on the Internet this week, the little rat has its own Twitter account.

PizzaRat has also become the spiritual animal of comedy video website, Funny Or Die, and the social media management tool, Hootsuite.

It also grabbed some attention from global agency McCann.

While everyone sent their love to #PizzaRat, people in the U.S. were excited about Pope Francis' historic visit to the country. Twitter took the initiative and rolled out a few special Pope emojis.

The United Nations was well prepared and gave its followers a traffic alert.

Since everyone wanted to meet Pope, the Federal Bureau of Investigation (FBI) had to put magnitude of security efforts surrounding papal visit:

In addition to #pizzarat and #PopeInUSA, the 67th annual Primetime Emmy Awards (#Emmys or #Emmys2015) also gained much attention this week.

Bud Light's "Rita" series played around with colors and crowdsourced answers to the question of what to wear for the show.

Also, toilet paper brand Cottonelle played smartly with TV show American Horror Story.

Compared to Bud Light and Cottonelle, Seamless appeared to be a little...plain.

As Pizza Rat, Pope Francis' visit, and The Emmys were trending in the U.S., motor race Singapore Grand Prix (#SingaporeGP) overwhelmed Twitter in Asia.

Singapore Airlines, a title sponsor for the race, prepared a few tweets in its pipeline beforehand.

And Uber wasted no time in promoting its service.

Of course, Uber's competitor Grab Taxi Singapore didn't want to fall behind:

What were your favorite tweets this week? Let us know in the comments below!

Homepage image via Shutterstock.

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