What's that "wassawannabe" thing I hear at the beginning of some songs?

[Jermio]

People on the booth didn't answer me. It's some weird phrase I'm hearing during the opening of a number of rap/hip hop songs on the radio.

 

[Amestafuu (Emeritus)]

U me and DJ mustards beat tag?

That's not what it says lol

 

[Jermio]

U me and DJ mustards beat tag?

That's not what it says lol

Yeah, what the hell are they saying?

 

[Amestafuu (Emeritus)]

"Mustard on the beat ho"

But it sounds like shyt u can't hear it.

 

[xXMASHERXx]

 

[DA_LURKA]

"Mustard on the beat ho"

I always thought it was "bust it on the beat ho".