berries and cum is a ritual when a man with mommy issues eats berries while masturbating and cums on them while screaming "UR MOM" afterward he might do the little laddance.
"yesterday was so fun! i went to the water park!"
"lucky, yesterday i heard my brother doing the berries and cum ritual."
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi