Steps

1. Take a simple wastepaper basket and some crumpled and rolled sheets of paper
2. Position yourself at a reasonable distance (which will not change)
3. As in basketball, aim and throw the paper, each in turn, so that it falls into the wastebasket
4. For each successful basket, your partner must remove one item of clothing (so you must wear the same number of items)
5. If you manage to deprive it of its complement, then you win the treat