sex performed between a gnome and a normal human in which the gnomes penis is too small to fit in any of the regular sexual orafices, so is instead placed in the nose
originally developed in neolithic times, nasal sex did not come into popularity until the recnet body modification craze whereas people were more inclined to enlarge various cavities of their bodies.
the penis is inserted into the nose, and thrusted until one's thick hot jizm spews onto the receiver's brains, known as getting some "hot brains". typically those of african, italian and/or jewish descent are popular within the nasally sexual set.
"i fucked her ass then got the hottest brains until the shitcame out of her eyeballs, yo!"