Justin Bieber has already apologised for disrespecting the Argentina flag during a concert but Taylor Swift is still waiting for his apology. As part of his musicmonday campaign, Justin just released a track titled "All Bad." He admitted that part of the lyrics is meant to diss Taylor by re-Tweeting a follower's message who said that Justin was shading his rival singer with the said song.

Source: YouTube.com/JustinBieberVEVO

In the new track, Justin sings:

It's another, if it ain't one thing
Instigators, like pouring fire on propane
The wrong thing, they be worried about
Ooh, you know females
And how they like to run their mouths

Wanna be, wanna be, just like, talk like, you
(like you) you (like you)
Misery, misery, love's company
Don't let them change your mood

They try to get at me (They try to get at me)
Behind your back (your back, your back)
Tryin' to tell me that I'm just like the others
But I ain't all bad

A particular line that can be related to Taylor Swift is Justin's reference to how "females like to run their mouths." Everyone knows Taylor is not the biggest Bieber fan, having allegedly advised Selena Gomez many times not to reunite with her on-and-off ex-boyfriend. Taylor stuck her tongue out over Selena and Justin giving each other a kiss.

If Justin slams Taylor in his single, can we expect some musical retaliation from Taylor? She does not hold back her emotions when writing songs anyway, as John Mayer and all of her ex-boyfriends know very well. Taylor has reportedly heard the song and is definitely going to respond. With her mentality that payback is a bi---, a song about Justin is inevitable but still has no timetable.

This possible musical feud would put may Swifties and Beliebers in a hard position because they're fans of both singers but everyone is getting curious to hear Taylor's new track. She writes the best break-up songs ("We Are Never Ever Getting Back Together" and "I Knew You Were Trouble" just to list a few) and fans are excited to hear what she will write to defend her friend, Selena Gomez's heart.