Tote means to carry. People often say they're totting to indicate they have their weapons on them. When used, people often indicate what they're carrying, though not all the time. For example in Biggie's "Kick In The Door" song he says, "Call me Francis M.H. White - Intake light tokes, tote iron - Was told in shootouts, stay low and keep firin" in this particular line Biggie indicate what he's carrying which is his "iron(slang for handgun)", sometime people only say they're totting such as in Lil Mouse's "Get Smoked" song in which he says "09, we tote; my n*ggas ain't no joke".