Normally refers to a guitar scale/melody, but can be applied to more than just guitar.
Usually one riff, followed by another in rapid succession.
Said riffs must be awesome. If they are lame and put together, you cannot achieve riffage simply because riffage sounds badass, both in context and literally.
A series of awesome riffs put together to achieve maximum badassery for a song.
Me: "Dude, check out this riffage."
Person: "Holy Shit dude, that's some serious riffage."
~or~
Me: "DUDE CHECK OUT THIS SWEET RIFFAGE!!!1!"
Person: "This isn't riffage, man. Riffage sounds awesome, this sounds like poo."
Me: :2[
Meshuggah, Ion Dissonance, The Tony Danza Tapdance Extravaganza and many other spacial music worms in the hole deserve to be cranked up to maximal volume, as it then yields minimalistic earaches to our well-known field of energy and our set of information, which in a symbiotic relationship a certificate creature crapture kreau. Thus, the mighty chugging riffage entered this time and space and it is still alive and kicking good-arses.
It is said of the situation where a person has the bad luck to make contact with his testicles against an undefined surface or object, intentioned or not.
Given the nature of the word, it is more appropriate to design cases where the interaction is made with a moving object, for example, a ball.
Although it is extremely painful for the victim, it tends to be considerably funny to people who witness it.
Today in the baseball game the pitcher took a nutshot; the baseball hit him in the nuts.
Man, I just watched the funniest nutshot video ever.