T-ness Envy:

Jealousy that another imaging group has a higher field magnet

Jodie Fostering:

Trying to pull a weak signal out of noisy data, rather like Jodie Foster listening to radio signals for signs of alien life in the movie "Contact"

dMRI:

Dysfunctional magnetic resonance imaging, when your scanner is having a bad day

Subcortico-occipito-parieto-temporo-frontal network:

Euphemism for "it lights up the whole brain"

Screen Saver Scan:

A scan in which something goes horribly wrong, allowing you to look for, for example, "the screen saver area"

Brain Localizer:

A scan that is not particularly useful because it activates practially everything.

Voxel vomit (also, Road Pizza):

Bad data in which everything lights up

Gigabitch:

To complain loudly to one's co-workers that they're hogging all the disk space

Bite barf:

The gagging reflex caused by using a head restraint system

Bore-dumb:

The groggy feeling one has after coming out of a long scanning session

Princess-and-the-pea phenonmenon:

The excruciating pain caused by a small irritant under the head during a scan session