look up any word, like cleveland steamer:
 
3.
One who is able to conquer five female bum-holes in a period of no greater than seven days.
My dad was a back-door conquistador; at least that's what my mom and sister said.
 
1.
Derogatory slang for "gay". See fudge-packer or ass bandit.
Someone told me Bruce was a backdoor conquistador.

The Giants are a bunch of backdoor conquistadors.
by Mercury1 July 18, 2005
 
2.
phrase used to describe homosexuals who conquer uncharted anal territory. derived from spanish "conquerer"
that guy nasty nate is a major back door conquistador
by ballzz March 24, 2003