To wave your gun.
Often referenced in hip-hip:
Jigga Man aka - Jay Z & Dj Premo
I put your crew in hard bottoms
The priest is like, "God's got him"
"He never did nuttin to nobody but them boys shot him"
Brandishin iron, outlandish buyin
Apathy & Celph Titled
Apathy - Verse 3:
I jump in the arena and stand up to the lions
Expand like a DNA strand in man science
Former old scrolls, to gold on Spanish islands
Pirate of the Caribbean brandishin iron