In this time of JibJab, this one is very appropriate. (From Merriam-Webster). Also a very useful word for me. Apparently it originally was mainly used to describe the tremors one gets from drinking too much alcohol.
The Word of the Day for August 8 is:
jimjams \JIM-jamz\ noun plural : jitters
Example sentence: "I love cappuccinos, but the caffeine gives me the jimjams," said Paula.