"Omg Karen this random guy just sent me a picture of his dick!"
"Omg Susan you are now a victim of dick picking, I'm so sorry you had to see something so tragic and small."
When you put your dick inside a pussy for at least three hours with absolutely no movement whatsoever. The pickling effect depends on the acidity of the pussy juices.
Dick pickling: Wow me and my girlfriend dick pickled for 5 hours last night, my dick now has a frothy brine to it. Mmmmm dick pickles.