A situation where, while having sex, a man elects to pull out and ejaculate on a woman's chest. This event is immediately followed by the man leaving the room having said nothing else to the woman. It is often the case that the man does not even get dressed before leaving. This act is most often associated with one night stands, but has begun making its way into longer term relationships as well. Some believe this act is done to symbolize a male's dominance, while others believe that there is no symbolism involved.
Dude, I'm so bored of just shooting off. Next time I think I'm gonna hit a Walk Off Home Run on her just to change things up a little bit. I think she'll appreciate it.
Dude, remember that girl that we saw last night that looked like Katie Perry? Well, I totally jacked a Walk Off Home Run on her last night! She won't be forgetting me anytime soon.