spinal fusion precursor 

n. Any dangerous activity that might result in a broken neck. Originally used in radical skateboarding it is now used in everyday situations. Also a sexual euphemism.

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I'm going to tell the boss where he can stick his stupid new ideas for productivity.

Have you given anyone a spinal fusion precursor before?

A couple of times, but don't change the subject.

spinal fusion precursor by gnostic1 March 21, 2012

precursors 

Chemicals used to manufacture crystal meth or crank that you can be arrested for having together or in large quantities.

anhydrous ammonia,ephedrine,pseudoephedrin, ether, dry ice, lye,ammonium nitrate fertilizer,lithium batteries,drain cleaner, muriatic acid, sinus inhalers,red phosphorus, iodine

precursors by the tweaker March 17, 2005

precurser 

The time when a computer starts up before the curser shows up.

Well Cmon click on the Internet icon. I can't it's still precurser

precurser by Das Miz August 25, 2016

precursery examination 

An assortment of inspections and tests that a pediatrician and/or child psychologist performs on a toddler during the time when he's just learning to talk, in order to determine the likelihood that he will develop a "potty mouth".

A precursery examination is all well and good, but I think that a physician should also check on how the child's PARENTS AND SIBLINGS "behave themselves" verbally, as well --- whether or not THEY exhibit a perpetually "salty" vocabulary is often a much-better indication of whether Little Junior is going to begin acquiring a "colorful" vocabulary than the results of any physical/medical tests!

precursery examination by QuacksO November 26, 2018