Well, that question isn't specific enough. In what way do you want to get him back, like get him back for something he did or.. that's what we need to know.
*You could also check out Wikihow:
www . wikihow . com /Get-Revenge-on-Your-Siblings
Chat with our AI personalities
your big or little brother/sister might be mad at what you did so play a game or get him a treat spend time with him or her my big brother is a teen i do what ever he asks me to do and if i ask him to do somethin the answer is no