A challenge issued from one party to another. Similar to a "Double Dog Dare", the receiving party must, through force of will, "Power" Up or Down. If the receiving party does not PU or PD, then he must GTFO.
Pudoo Patel is the biggest legend on the Internet. Although he can't spell for shit, his catchphrase 'u r sayin wut u son of basterd bitch' will always crack you up, and help you when you are angry at someone. Trust me, it works 100% of the time.
He also works at Dell in India.