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1.
While in thought, whether it's in conversation, or in your head - you say one sentence, and then from that sentence you move to a topic that is slightly if not barely relevant.

Jumping can be common conversational flow for schizophrenics, or someone under the influence of drugs.
I went to the auto dealership to buy a car and I saw one I really liked that was red - kind of like the wagon I rode when I was a little kid. I remember having a friend who would ride it with me but sometimes he was mean like how some people can be when you ask them for a cigarette. I don't think it's that big of a deal, but I did hear nicotine is more addictive than heroin like that movie with that guy from Thirty Seconds to Mars. I remember seeing one of their music videos and it had a lot of cinematic elements. If I tried to direct a movie I would work to push all boundaries of theatrics. Do you ever think two or more states will combine their boundaries to become one larger state? I can't imagine what would have to go on politically for that to happen. I consider myself fairly conservative to be honest. I don't really care for liberals trying to make everything okay like gay marriage. I think there are two kinds of gay people; people that are born that way and people that are gay because their minds are corrupt. Now, that I think about it, corruption is starting to make me think of communism. Oh, yeah - so I put a down payment on that red car I liked.

I need to take it easy on this blunt. If I keep jumping in my head I'm going to have a panic attack.
by jfjfjfjfjf August 09, 2011
 
2.
The act of using illegal drugs in order to change the perception of the mind. IE: getting high
Yeah, it's definitely easier to get higher if you have someone jumping with you. I have gotten pretty high but I don't think I was as high as him.
by Jumpy McGee December 24, 2006