>>108145292Yes, and there should be an episode her about her joining a nudist protest group (without telling her family because she knows they would try to stop her) but she gets discovered with her group by Bart. Lisa is extremely embarrassed to be seen naked by her brother, but after realising Lisa knows Bart, they extend an invitation for him to join the group. Knowing it will further embarrass and annoy Lisa, Bart accepts and gets naked to join the group activities. However, after a while of relishing in his Sister's suffering, Bart gets an erection, and the group notices, which now turns the tables on Bart and causes him to be embarrassed. Because the group are strongly against sexualisation, they get angry at him, but Lisa steps in to defend him, wanting to protect him from their wrath. This results in the two of them being kicked out of the group. Bart is touched by Lisa's kindness and apoligizes for infringing on her activities and getting her kicked from her group. She forgives Bart, they both hug and blush and then they have to walk home together naked.