"Shaking like a dog sh*tt*ng razorblades" - From a song, but I've picked it up. Shaking like crazy.
"Flurb" - Slang among some LARPers I know (they do the kind of LARP where role-play means beat each other up) for nerds or excessive rolplayers. If you've ever had a character (or LARPed a character) with drow, elves, dragons, fairies, or cat-people in your background, you may be a flurb. If you have at least 2 of the above, you're almost definately a flurb. If yo uhave all of the above, you're some kind of patron Saint of Flurbiness