Good for you Flipper ! I like to bring up the blood fractions too when I feel like having fun with them at their table set-ups in the subway stations.
MY newest questions for them is JW.org, I tell them I remember when you were admonished to stay away from the internet, now look what you call yourselves, then I throw in how my relative in "da troof" always said there was ascripture that says not to be a part of the world or word to that effect. but looks like you guys gave in !