This is when a guy/girl hasn't had the time to do his/her daily jack-off and is pent up and taking it out on others. If you are not a daily masturbater then this could also be used as "uncle jack hasn't come by this week/month"
"I'm sorry for being a jerk, uncle jack hasn't come by today and it has be all riled up"
Derogatory term used mostly by black americans to describe black men whom they feel have losttouch with, or turned against, their own culture.
"Who's this police ass nigga?", asked Buckwheat.
"That's my bitch ass neighbor", said Alfalfa.
"You tell that Uncle Tom Ass Nigga that I'm watching him", said Buckwheat.
"Alright. I'll tell him right now."
Uncle Twister also known as "The Great One" is known through-out the internet as a well known figure. He is mostly known from the world of Mario Kart Wii, Skype & Youtube bringing joy to others around him. Some also refur to this man as the "Modern Day Jesus" He has many disciples who treat him with the upmost amount of respect.