Come ass you are

What a hot-in-da-crotch stud tells a hot chick whom he's inviting over to his residence for a wildly good time --- i.e., "your warm velvety squeezable posterior will be just as delightful to me regardless of what you're wearing; besides, any garments are gonna be coming off just as soon as you arrive here, anyway, and so it really doesn't matter what you have on at da moment, anyway." :P

Telling a gal to "come ass you are" may indeed put her at ease as far as wardrobe concerns, but it could also give her second thoughts about whether she wants to show up in da first place, since "jumping straight to fourth base" --- i.e., merely having you immediately rip off all her clothes and take a flying leap into bed with her --- might not be what she'd originally had in mind for said visit.