At the end of each week, #Top40Tweets lists a cross-section of artists on the current pop charts and puts their tweets on display (along with their current chart number) for your enjoyment/scrutiny. This week, we look at 6 artists on the Billboard Music Charts.

#86: Justin Bieber – All I Want For Christmas Is You feat. Mariah Carey

Have you guys seen Justin Bieber’s new music video? The oldstyle Christmas claymation one? No? Be prepared for something truly disturbing:

FUN FACT: Justin will be performing at the 14th annual Chirstmas in Rockafeller Center special (the one where they light up the big tree) on November 30th, alongside Michael Bublé, Cee Lo Green, Katharine McPhee and Faith Hill.

#2: LMFAO – Sexy And I Know It

I see what you did there. It seems the goofy heart necklace was a victim of a hearty embrace, courtesy of Hasselhoff’s German death-grip. You got Hoff-handled, Red Foo.

FUN FACT: If for some reason you wanted to look as goonishly ridiculous as Redfoo and Sky Blu, they’ve got their own line of clothing, via Party Rock Merchandise, so you can up your douche-factor.

#6: David Guetta – Without You feat. Usher

Pretty good cake, I guess, but here are my favourite celebricakes:

FUN FACT: DJ Magazine named David Guetta the #1 DJ of 2011, which marks the first time in 10 years that the award has been given to a non-Trance DJ. Armin van Buuren had won the award for 4 consecutive years prior.

#22: Pitbull – Give Me Everything feat. Ne-Yo, Nayer, Afrojack

If you looked like this without one, you’d wear custom-made hats all the time too:

FUN FACT: The above mugshot was taken in February 2008, when Ne-Yo was arrested for drunk driving. Look at those bleary red eyes! And the 5 O’Clock shadow…on his head.

#42: Taylor Swift – Sparks Fly

T.I., Switchfoot, Jason Mraz, Ellen, and Jimmy Eat World??!! Taylor Swift’s rolodex is a bizarre mishmash of celeb oddities.

FUN FACT: Taylor Swift won Entertainer of the Year at the 2011 CMA Awards on Wednesday. She also won the award in 2009, which makes her the only woman to receive this honour twice. During her acceptance speech, Taylor said: “to win it twice is like the coolest thing that’s ever happened to me, happening twice.”

GRATUITOUS & GROSS KE$HA TWITPIC OF THE WEEK:

A known humanitarian and philanthropist, Ke$ha brings a moment of joy to a homeless man’s otherwise bleak existence.