I am not sure if this is meant to be subtle pro-marijuana propaganda or just a brand name thought up by someone who has no idea what maryjane may also mean. These buns are enriched presumably to make them appeal to parents who are buying them for their children. According to the marketing, these buns are old fashioned enriched I may be wrong, but I am pretty sure that in the old days, food was natural and not pumped full of gimmicky chemicals to make parents buy them.
-- want some for mah munchies !