Telling someone they don't deserve your time/effort is pretty dumb since you're clearly wasting your time and effort telling them this.
Calling people children and being patronizing is just more annoying than tough really.
I'm going with Saikx because of the implication, it's vague and so leaves a certain degree of mystery. The wink is slightly playful but within the context you assume it's a kind of fake, malicious playfulness that displays this person is manipulative - making them more dangerous than your average dumb thug.
Lol manipulative. That kid is some fucking hardo whose parents forgot to block Breaking Bad from his Netflix
When I read what he said for the first time I couldn't stop laughing