You gotta pay like you weigh: wet with two pairs of clothes on
“Pay like you weigh” is phrase that pimps say to hoes meaning that the ho better get a substantial amount of money from prostituting to give back to her pimp. Bun is insinuating that he will take your girl and put her out on the street as one of his hoes.
Bun is also telling his hoes to contribute more than their fair share: “wet with two pairs of clothes on,” i.e. much more than they actually weigh.
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