bongologist
One who studies how to smoke marijuana effectively through any bong. This includes the customs, cultures, and the art of toking.
The bongologist concluded the gravity bong to be highly effective, somewhat crude, but definitely not an urban myth.
beer bongologist
someone that knows a hundred different ways for you and them to chug your and everyone else's beer.
Timmy: We need to invite a beer bongologist to this party to show the ladies how to get FUBAR.