I know what a prick is. Perhaps a " Not sure if serious" reply would have been more appropriate. Yes, I am aware that if the item can be used for any thing other than your specific job, it is not allowed as a deduction. A cop could deduct uniform costs for example, but not a firearm.
I run a multi million dollar business and our accountants frequently advise us to spend money on things to reduce taxable income. I am also aware of the difference between a deduction, exemption and a tax credit. I guess next time I will use the ".../ sarcasm" notation so that readers won't jump to conclusions.
A prick, by the way, is making a small hole in something using an object with a fine point.