A scrotal surge is that feeling just before you
bust your
nut. A feeling almost better than the busting of the
nut itself. It makes your dingle tingle. Similar to the word "climax" but a much cooler word for it.
Awesome Guy: "Hey, Dude, you know that chick next door? The hot one?"
Not As Awesome Guy: "You mean that whore with one eye,
Rachel, who lives in the cardboard
box?"
Awesome Guy: "Yeah, I gave her 20¢ and she sucked my
cock until I had a scrotal surge and then stopped. It was awesome!"
Not As Awesome Guy: "You're pretty fuckin' weird..."