(n) Any person who penetrates another person's anus for
sexual gratification. Often referred to in
homosexuality, however has been known to be referred by straight couples in masochistic
sexual positions.
(adj) anal-spelunking the act of having anal sex with another person.
Tom was referred to as an anal-spelunker by his co-workers because he had a
boyfriend.
John asked his wife if he could do some anal-spelunking
tonight.
Antonio and Sergio claim to be anal-spelunkers