"Sibling Bonds" is the seventeenth episode of Lizzie McGuire.
Lizzie has to attend a class charity drive and looks forward to spend the whole day with Ethan. At home, Matt irritates Lizzie with his magic tricks and he handcuffs himself to Lizzie and loses the key. Meanwhile, Jo finds the key and decides to remain silent about it so that Lizzie and Matt learn a lesson about family bonding, getting along, and looking out for each other. Lizzie has a hard time keeping Matt hidden from Ethan for the whole day leading to embarrassing situations.