var waifus = {
    "boogers-in-your-soup": ":boogerswaifu:",
    "headzoo": ":headzoowaifu:",
    "Regret_Pancake": ":clap: :pancakewaifu: :pancakewaifu2: :clap:"
};

$api.on("user_join", function(e, data) {
    if (waifus[data.name] !== undefined) {
        $api.send(waifus[data.name]);
    }
});