If I can quote a song, "take it easy".
You asked, "what am i supposed to let them walk all over me ? and sit around and watch? heck no".
In a word NO! However, when somebody tries to provoke or "dis" you, they are the ones who look bad. Not doing anything is the appropriate response. Responding might make you feel better, but it almost always makes you look bad.
I grew up in a tough neighborhood in Brooklyn. In fact, it's not too far from where Sal grew up. A comment like
"...except your mom"
might get you beaten or cut. Lighten up!
They find a murdered body every sixty three hours in the 75th police precinct. I count my blessings that I no longer live there. There are plenty of nasty people out there. I suggest you avoid those folks and look for the positive in situations and people.
You obviously have good taste in knives, so stay focused on that.
In addition to integrating weapon systems for Cruisers and Destroyers, I'm also a part time musician. Music and knives are both good things, stick with them.
One way or the other, you pay for your tools!