As I know this word among lesbians and bisexuals it means licking and kissing your lover's ass and probing their asshole with your tongue -- not to prepare for intercourse but as a beautiful sex act in itself.
Mmm! Your ass feels so good to my face and tastes so good! I love reaming you!
the absolute pinnacle of human evolution ream would be the ultimate human there is no one more perfect than ream, ream is a god among gods he is the ultimate being