Bathroom

You decide maybe it's just time to take a shower and freshen yourself up, maybe your roommates will be home soon and might as well get time in before anyone else can. You walk across your room and open the door to the bathroom and flick the light on. As you walk in and towards turning the shower on you step on something. You look down, something red is on the floor and it looks familiar. You had seen this online before and laughed to yourself as you realized what it was. It was a lace thong, but why was it in the bathroom? Did the guys you're living with have girls over already or was this from last year?