or we could go with the hypothetical , you say you have never met a pot smoker who was worth an ounce of spit..
Lets says lensman was an occasional potsmoker and you met him at a convention, would you say he is "not worth an ounce of spit" ?. or would you have met 1 person who was worth an ounce of spit ? or would be be worth more than an ounce of spit..
BTW whats a n ounce of spit go for these days
