Two rappers' Twitter beef prompted Tweets from burger brands, Jon Stewart's Daily Show departure brought nostalgia, and National Underwear Day mostly just made brands get weird.

One of the dominant trending topics this week was the Twitter battle between rappers Drake and Meek Mill. Fast food brands wasted no time making puns around the beef between the two.

Whataburger, a Southern burger chain, doesn't have the following of Burger King or White Castle, but the Texan brand was arguably the winner there. Whataburger's Tweet garnered a combined 26,000 favorites and retweets, and Drake even displayed it onstage during a performance in Toronto earlier this week.

Another fast food chain with a particularly engaging Tweet was Arby's. Giving a self-deprecating shout out to Jon Stewart, whose 16 years hosting The Daily Show came to a close last night, Arby's subsequently saw nearly 8,000 mentions of its own within 13 hours of the Tweet.

The #JonVoyage hashtag featured more celebrities and media outlets than brands, though Skype also (Read more...) Stewart a fond farewell.

Wednesday's National Underwear Day was a less aggressive topic that inspired some bizarre Tweets, from Vevo's slow-motion video of Justin Bieber in his boxers to toilet paper brand Charmin making a veiled reference to pooping one's pants.

Ann Summers, a retailer specializing in lingerie and sex toys, didn't just stop at one Tweet. The British brand spent the entire day tweeting about National Underwear Day, which, given the nature of its products, is less of a head-scratcher than the Trident wrapper.

My personal favorite contribution to National Underwear Day Tweet came from For a company that has nothing to do with underwear, the company made a clever reference that aimed to drive traffic to its own website. Based on the bleak number of favorites and retweets, I may be alone there.

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