I am not that scared, not unless he RATs my parents' computers.
1. There's no way he can get your IP unless somehow you gave him your ip or you have him added on Skype
2. A quick change of an IP will prevent him from DDoSing you unless you give him your IP again
3. no way of RATing you unless you stupidly download his server, which you deserve to be meted if you're dumb enough.