Basically, Edd/Matt (If you wanna rp with Uma choose Edd, If you wanna rp with Lilly chose Matt-) found some old baby pictures of Uma/Lilly, and decides to be the bog brother he is and embarrass their little sister with them-

(I got this idea in my head from some people saying that my ocs are the most innocent people they've seen, so why not make them even more innocent-)