His eyes widen and his jaw actually drops a little. "Fukking--what?" He's heard Trinn have prehensile tails, but no way a tongue's not way better. Such bragging rights if he ever, say, meets a member of his own species again. He laughs a little manically and when he kisses Mort again there's nothing of teasing or cajoling, just raw, hungry lust as he invades Mort's mouth with his own suddenly very inadequate tongue.