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 5 artists on the Billboard Music Charts.

(Uncharted): will.i.am – T.H.E. (The Hardest Ever) feat. Jennifer Lopez, Mick Jagger

Wikipedia is grossly inaccurate here, everyone knows that will.i.am isn’t a man, he’s an alien.

FUN FACT: will.i.am is currently a coach on the UK version of the television singing competition The Voice. He’s recently been accused of subliminal advertising on the show, wearing a jacket that said “Go Hard Or Go Home” on it, which just so happens to be a lyric from recent single “T.H.E. (The Hardest Ever).” Isn’t that what singing competitions with celebrity judges are for?

(Uncharted): The Flaming Lips – 2012 (You Must Be Upgraded) feat. Ke$ha

When you’re a newly appointed officer on the LAPD, it’s a rite of passage to get sent out on a Ke$ha “piss-call.” Seriously, it happens so often, it’s like going on a coffee run for the whole precinct. The hardened sergeants and majors on the force all wax nostalgic about it at their retirement parties: “Ah yeah, I remember my first piss-call…”

FUN FACT: Listen to the Ke$ha/Flaming Lips Record Store Day collaboration here.

(Uncharted): Leona Lewis – Bleeding Love

It used to take Leona Lewis 45 minutes to pour herself a full cup of root beer. It was worth it.

FUN FACT: With a net worth of £12 million, Leona Lewis is the 2nd richest British musician under 30, trailing behind Adele (£20 million), according to the Sunday Times.

#4: Justin Bieber – Boyfriend

This might sound crazy, but I actually appreciate more cantaloupe!

FUN FACT: Justin will finally be releasing his music video for “Boyfriend” next week.

#20 (YouTube): Lady Gaga – Bad Romance

Ah, the age old remedy — placing raw meat on an open wound. Very medieval of you, Gaga.