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

I must have known king tut, isis, jesus christ, julius cesar, buhdah and all the greatsif wikipedia is correctbit.ly/I8FO8B“

— will.i.am (@iamwill) April 25, 2012

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

pee pee on the street. PoPo come n get me if u can find meeee. I blame traffik. yfrog.com/nzkmnzxj

— ke$ha(@keshasuxx) April 25, 2012

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

Just discovered a way to pour a fizzy drink without it fizzing up and over flowing. Pour it onto the side of the glass! am I late on this?!

— Leona Lewis (@leonalewismusic) April 23, 2012

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

Less cantaloupe, more berries. I’m talking to you, pre-packaged fruit salads. Don’t play me like that.

— Justin Bieber (@justinbieber) April 21, 2012

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

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

full video next week – youtu.be/qlEp1U7tfjI

— Justin Bieber (@justinbieber) April 25, 2012

#20 (YouTube): Lady Gaga – Bad Romance

Just in case you fall and scrape your monster knee! I’ll be there :) l love you, you bandage me up when I need it! Xox twitter.com/ladygaga/statu…

— Lady Gaga (@ladygaga) April 21, 2012

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