"NO U" is the ultimate trump to any debate or drama on the Internets. It originated on Something Awful at least 100 years ago and has been used ever since, though its roots originate in playground arguments. Perhaps the most appealing feature of "No U" is the fact that there is no defense against it and it requires no research whatsoever, but still manages to enrage other people. However, beware! Master debaters know that the only escape is to enter a never-ending cycle of "No U" until one of the debaters gets bored or angry and leaves. In this case, if you are the last person to leave, a winner is you! Congratulations.
Example of Delivery
Q u o t e:
Prima: If you're just going to sit back and criticize the furry fandom without doing any research on the sociopolitical ramifications of the lifestyle or culture, then you're nothing more than a prejudiced, narrow-minded homophobe.
Secunda: no u
Secunda has successfully enraged Prima so much that they can no longer come up with a valid counterargument, thereby winning them the argument and the adulation of millions of women. Remember to only use this power for the betterment of society, or for lulz.