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1.
O&A
Oran and Anal. Commonly used abbreviation in dating/sugar daddy websites. It asks or announces that a woman has good oral and anal sexual skills. NOTE: It does NOT mean she goes from anal to oral, or "ass to mouth". It simply states she performs both oral and anal sex.
"I require my future mistress to have good to excellent O&A skills."

"Sugar daddies: This little sugar babe is cute, petite and I have excellent O&A skills. I am a lady on the streets and a freak between the sheets."
by Greatos, God of Whores February 15, 2010