The act of shooting oneself in the face with their own semen whilst pleasuring oneself. Even better if you convince your girlfriend did it to you.
1: So I was jacking off last night, and accidently Jerk Cobained myself.
2: Yeah, sex with Courtney was great, all up until she pointed my dick away from her during a handjob and I Jerk Cobained myself.
to masturbate and finish by blowing the load into your own mouth
Man, I was feeling depressed last night so I gave myself a nice jerk Cobain.