When I was in college, freshman year, there were these two guys that roomed together who's walls were filled with hard-core punk posters (Cramps, Black Flag, Misfits, etc.) including the Circle Jerks, who I never heard. Me and my friend Dave, who were both classic rock guys started calling them the Circle Jerks in a friendly way - we all got along. One day they told me and Dave they had two extra tickets to see the Circle Jerks who were opening for Agnostic Front in Trenton. It was an amazing experience with people getting bloodied up in the mosh pit and the energy but it just wasn't me. I like some punk but it's the more accessible stuff that was slowly merged into classic rock like the Clash, Ramones, X, Talking Heads....
Although I did become a big fan of the Rollins Band who I saw multiple times, but by then the shows were far more tame as far as the crowd and mosh pits were concerned.