in order to get username you want, of course no time to loose, should be as quick as possible

This is indeed a good point. It is good that the xplosive username was free, when I registered (on 2017.05.17). I am using this username (and its similar variants) since approximately 2005.

Thank you for the reply.

Have a nice day. All the best. Greetings and much love from Hungary.