Had two trailer park trash girlfriends when I was younger. With those two I had the best anal ever, compared to any other girl later in my life, they are uninhibited, open to experimentation and willing to go whole 9 yards without too much pussyfooting around.
One of them would skip the pussy altogether and go straight to the pooper, she used to say "I know what you like doing with me Daddy, so why beat around the bushes, stick it right into my brown rose"

The only downside was they weren't crash-hot on hygiene, so if you could skip over that fact and go in dirty, good for you. I didn't mind much, either.