User blog comment:CartoonFan14/Rant: Making the Case/@comment-24200891-20170120050558

Linc's motivation is envy. His sisters overshadow him by their recognitions. He just wanted to be special like them and not an avarage grey person. It is easy to have enough of living in someone's shadow. Lisa and Leni overreact, they hitting wall happens and Lana does gross stuff so why would eating trash be humiliating for her? Sisters pretending to be still angry was not a good prank.