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1.
(n.) Sl.
1. One who persues anal sex for sexual pleasure or curiosity.
2. A homosexual male.
3. A proctologist.

This term may have come about after the likes of 2005's Brokeback Mountain--a film that depicts gay sex as a more pastoral undertaking.

"Rectal Ranger" can first be sited in 2005's Pretty Persuasion soon after Brokeback Mountains debut:

"These teachers, you know, hear it--these fucking dykes, lesbians, these feminists in the school system with their rectal-ranger buddies, you know; 'oh, it's the parents' fault, it's the upbringing.' Right. As if, what, kids couldn't inherently be fucking complete assholes on their own?"
Susie: "I bet you and your rectal ranger buddies always know how to pass the time when you're hunting for deer."

Bob: "...shut up...we don't have sex."
by scootie November 20, 2006
 
2.
A person usually male who likes to have fun via other mens anal passage. inserting himself into the rear, therefore making him a rectal ranger. Sometimes used as an insult to a straight guy, another word for gay or queer.
"Shut the fuck up Eddie you're such a rectal ranger.
by Eamer December 08, 2004
 
3.
A man who pursues adventures, escapades, or shenanigans in the rectal area of another man. Also may be used to describe the "double life" of a man who is married with kids, but secretly is a butt pirate with other men at night and on business trips
John is so obviously a rectal ranger. I mean, hes more addicted to ass than one of those scat freaks!
by The Dizzle with the Wizzles! March 17, 2003
 
4.
a booty snatch'n gay top
John is such a Rectal Ranger when he is in the club lookin for some ass
by BabyBluesLookin March 25, 2005