Siblings and Sombreros is the nineteenth episode of Season 6. It aired on April 8, 2015.
Sue lashes out at Axl when he forgets to bring home a sombrero that she wants to wear in a yearbook photo with Brad, and Axl lashes back about Sue constantly harassing him. Frankie gets between them, confiding in Axl that Sue can be "relentless" and telling Sue that Axl can be a "jackass". When the two children find out about Frankie's meddling, they turn their frustration to their mother and actually bond over it. Elsewhere, Mike is shocked when Brick wins an Athlete of the Month award at school, and thinks he still has a chance to develop Brick's skills at a sport. But it turns out another kid was mistaken for Brick because the two exchanged shorts.