A term often used in video game chat directed towards a individual with an annoyingly nasally voice.
xlxMadQUICKSCOPESxlx: I got a hit marker on you!!!! 1v1 me!!!!!
average gamer: blow your nose nerd
Junior misunderstood when his dad saw a booger in his nostril and told him, "blow your nose." He's been enjoying a steady diet of coke ever since.
Don't ever tell a cocaine addict, "blow your nose," because they will take it literally.