[Chorus]
Billy, Poco, Billy, Poco, yeah
Billy, Billy, Poco, Billy, Poco, Max, Chris
Billy, Poco, Billy, Poco, yeah
Billy, Billy, Poco, Billy, Poco, Max, Chris

[Verse 1: Heesung, Sunoo]
Heavy, heavy one!
My name is Billy (Billy)
Just talk to me, I'll push everything
Whether it's muddy sturdy wheels
Billy, Billy, strong friend Billy

[Verse 2: Sunghoon, Jake]
Heavy, heavy two!
My name is Poco (Poco)
Just tell me, I'll fix everything
I'm not afraid of any obstacles
Poco, Poco, cool friend Poco

[Pre-Chorus: NI-KI, Jungwon, Jay]
Oh-oh-oh-oh-oh, only trust us
Oh-oh-oh-oh-oh, go ahead!
Oh-oh-oh-oh-oh, stronger strength oh
Soaring high (Hey!)
[Chorus]
Billy, Poco, Billy, Poco, yeah
Billy, Billy, Poco, Billy, Poco, Max, Chris
Billy, Poco, Billy, Poco, yeah
Billy, Billy, Poco, Billy, Poco, Max, Chris

[Verse 3: Jay, Heesung]
Heavy, heavy three!
My name is Max (Max)
Just talk to me, I'll listen
Nothing in the world is heavy
Max, Max, reliable car Max

[Verse 4: Jake, Sunghoon]
Heavy, heavy four!
My name is Chris (Chris)
Just talk to me, I'll protect you
Can overcome any difficulty
Chris, Chris, great friend Chris

[Pre-Chorus: NI-KI, Jungwon, Jay]
Oh-oh-oh-oh-oh, only trust us
Oh-oh-oh-oh-oh, go ahead!
Oh-oh-oh-oh-oh, stronger strength oh
Soaring high (Hey!)
[Bridge: All]
I'm heavy
We heavy, heavy
I'm heavy!
We heavy, heavy!

[Chorus]
Billy, Poco, Billy, Poco, yeah
Billy, Billy, Poco, Billy, Poco, Max, Chris
Billy, Poco, Billy, Poco, yeah
Billy, Billy, Poco, Billy, Poco, Max, Chris