question: Watch Me Do was co-written by the rapper who best known for what 2015 single?
answer: Bills
context: Title: Young Greatness
  Passage: Theodore Jones, (born September 19, 1984) better known by his stage name Young Greatness, is an American rapper from New Orleans.  He is best known for his 2015 single "Moolah", which peaked at number 85 on the "Billboard" Hot 100 chart.
  Title: Calez
  Passage: Marcale Jenkins, better known by his stage name Calez, is an American rapper and record producer from Chicago, Illinois.  He is best known for his collaborations with Chicago rappers Alex Wiley and Chance the Rapper, most notably the hit 2015 single, "Navigator Truck."  Calez is a member of the Chicago hip-hop collective, "2000eighties."
  Title: LunchMoney Lewis
  Passage: Gamal "LunchMoney" Lewis (born January 11, 1988) is an American rapper, singer, songwriter and record producer.  He is best known for his 2015 single "Bills", which topped the charts in Australia and peaked within the top ten in New Zealand and the United Kingdom.
  Title: U Got Miilk ?
  Passage: U Got Miilk ?  is the second studio album by American Rapper Miilkbone, released on April 17, 2001 by XCaliber Entertainment and Lightyear Entertainment.  The album generated three non charting singles, "Yes Yes Y'all", "Dear Slim", and "A Few Good Men", all of which did not chart.  The album is notable for its single "Dear Slim" which attacked rapper Eminem, who had previously dissed Miilkbone on his song "Just Don't Give A Fuck" with the line, "I'm Nicer than Pete, but I'm on a Serch to crush a Miilkbone I'm Everlasting, I melt Vanilla Ice like silicone".  After learning that Miilkbone was planning to release a diss track against him Eminem was quoted as saying, "When I said 'I'm on a Serch to crush a Miilkbone,' I was talking about stereotypes and now I heard he wants to bring it, so he could bring it and look stupid, you know what im sayin'?  I heard his shit and his shit is garbage.  I wish it was dope enough for me to respond, but it's not, you know what i'm sayin'?"  Eminem never responded to the song.  This would be Miilkbone's last release until his return to rapping in 2012 and his 2015 single "Facebook Love" from his upcoming third studio album "The Voice Of Reason".
  Title: Watch Me Do
  Passage: "Watch Me Do" is a song recorded by American singer and songwriter Meghan Trainor from her second studio album "Thank You" (2016).  It was released on March 25, 2016, on iTunes for those who pre-ordered the album and other digital download platforms as a promotional single.  Produced by Ricky Reed, he co-wrote the song with Trainor, Jacob Kasher Hindlin and Gamal Lewis.
  Title: Chedda Da Connect
  Passage: Courtney A. Milburn, (born July 4, 1986) better known by his stage name Chedda Da Connect, is an American hip hop recording artist from Houston, Texas.  He is best known for his 2015 single "Flicka Da Wrist" which has become one of the biggest Hip-Hop singles of 2015.  As of September 2015, the single has been certified Gold selling over 500,000 downloads, spawned over a million memes and vine compilations, and has accumulated over 6 million YouTube views in 6 months, since being uploaded to YouTube in May, 2015.  It peaked at number 94 on the US Billboard Hot 100 on 29, May 2015.
  Title: Michael Ray (singer)
  Passage: Michael Ray Roach (born April 29, 1988), best known as Michael Ray, is an American country music singer and songwriter.  He is signed to Warner Music Nashville, for which he has released his debut single, "Kiss You in the Morning".  The song has reached No. 1 on Country Airplay.  Before this single's release, Ray was mentored by John Rich of Big & Rich on the singing competition "", which he won.  He and Rich co-wrote Big & Rich's 2015 single, "Run Away with You".
citations: Watch Me Do LunchMoney Lewis