I have heard of cat scans but not pet ones. Is this a typo?
More likely the DUmmie knew the term was loosely associated with pets, but little else. After all, on that board it's not expected anyone would know the difference...
No...there is a such thing...and I would suggest every liberal gets one. A PET scan (Positron Emission Tomography) looks at images and function (so...in the libtard...it would show them their LACK thereof).
They are used a lot for cancers...but also for finding DEMENTIA. So...we might have a "LOUSY FREEPER TROLL!!!!" alert. Could have been a subtle slam...lost on the dummie crowd. LOL! :-)