Noun, someone who gives a virus or infection (not an STD) to his or her significant other, like the flu or pink eye, requiring a trip to the local CVS.
Chip: Babsy, you definitely don't just have allergies. I think that's an ear infection.
Babsy: How do you know, sweetie?
Chip: 'Cause ya gave it to me, Miss Jitterbug!
A very pretty and energetic girl/lady, she’s very smart and sweet around those she love hence the name jitterbug she love making jokes. But be careful not to hurt her because she becomes heartless and cold. You will never see that side of her again. We love a jitterbug boss lady!