When the humanfacial nerve realises that something has indeed landed on their face. Causing the motion of the face to move from side to side viciously.
"Gee look at that guy he must be having a full on Jitter Fest"
"Now if you'd like to be a Jitter Bug, first thing you do get yourself a jug; put whiskey, wine, and gin within, shake it all up and then begin. Get yourself a cup and start to toss, come on Jack you're drinking Jitter Sauce."
-Cab Calloway
A sports reporter's awkward, stammering reaction after a seemingly innocuous question is greeted with a completely unsolicited Bible-Thumping answer: see Erin Andrews' interview with Josh Hamilton at the 2009 MLB All-Star Game or any interview ever with Kurt Warner.
Susie Kolber: Kurt, I see that you are wearing new cleats tonight, any comment?
Kurt Warner: Without the grace of our risen Lord Jesus Christ there would be no cleatts, praise His name.
Susie Kolber: yes...umm...of course...uhhh...back to you Berman!
noun
1. a person inclined to relocate on a whim; someone who randomly moves or leaves town (a lot).
2. to suddenly be in a frantic state of making a new home elsewhere (usu. without reason).
3. a condition preventing someone from settling down.
ORIGIN: a slang term first coined in 2009 in connection with a blog that goes by the same name.
1. Hey there, jitterpants! What brings you back to town?
2. My pa up and left us the other day! Ma says he's got a case of the jitterpants.
3. That boy 'll never find himself a wife, long as he's got them jitterpants on.