<P> The Lab Rats learn about chores and earn an allowance for the first time . In hopes of raising more money, the Lab Rats decide to host a yard sale, but they accidentally sell an antique jewelry box that Donald was restoring for Tasha . Meanwhile, Leo and Donald bond over the latest Pig Zombie movie . When Tasha finds out about her son disobeying her rule and lying to her and Donald, she grounds Leo and forbids him to watch television for a week, but Tasha later lets Leo watch the Pig Zombie movie marathon and she extends Leo's grounding to a month . Donald finds out about the jewelry box's disappearance and punishes the Lab Rats by making them do every filthy, disgusting chore in the house without their bionics for a month . </P> <Tr> <Th> 15 </Th> <Td> 15 </Td> <Td> "Dude, Where's My Lab?" </Td> <Td> Victor Gonzalez </Td> <Td> Marcus Alexander Hart </Td> <Td> July 16, 2012 (2012 - 07 - 16) </Td> <Td> 115 </Td> <Td> N / A </Td> </Tr> <Tr> <Td_colspan="8"> <P> Tasha takes the entire family on a nice technology free beach weekend in the RV, but when Donald discovers a solar flare headed toward Earth, he secretly enlists the help of the Lab Rats . While Donald distracts Tasha, the Lab Rats are forced to wait in the RV for their rocket launch window . Cooped up inside during their first summer vacation, Leo and the Lab Rats sneak out for a quick jaunt on the boardwalk, but when they return the RV is gone . A policeman tells them he had the RV towed and the Lab Rats perform to get money so they can get the RV back, but they land in jail when they realize they do not have a license to perform . </P> Guest star: Angel Parker as Tasha, Judson Mills as Beach Sheriff </Td> </Tr> <P> Tasha takes the entire family on a nice technology free beach weekend in the RV, but when Donald discovers a solar flare headed toward Earth, he secretly enlists the help of the Lab Rats . While Donald distracts Tasha, the Lab Rats are forced to wait in the RV for their rocket launch window . Cooped up inside during their first summer vacation, Leo and the Lab Rats sneak out for a quick jaunt on the boardwalk, but when they return the RV is gone . A policeman tells them he had the RV towed and the Lab Rats perform to get money so they can get the RV back, but they land in jail when they realize they do not have a license to perform . </P>

In what episode of lab rats does leo get his bionic arm