A combination of a bottom undergarment and a prophylactic includes a bottom undergarment, such as a panty, having a crotch area and an opening formed in the crotch area, a condom, a base to which the condom is fixed, and snaps on the base for snapping into receptacles on the undergarment, so that the prophylactic and base are removable after use and replaceable. A second condom of a type suitable for oral sex may be attached to the base plate, which plate is reversible.