Someone who is physically and mentally out of control. From "lunatic" and "hooligan".
Dad you're such a loonigan
מאת Ricoid 4 בינואר, 2011
1 more definition
crazy assholes in the process of committing shenanigans
look at those fucking loonigans!
מאת GhostRX 6 בספטמבר, 2005