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2.
1. Noun: The act of two people performing oral sex to each other at the same time, in which the man is on top, performing cunnilingus, and lowers his penis down into the mouth of the woman.
2. Verb: To perform oral sex at the same time, but with the man on top and the woman on the bottom. Sometimes accompanied by a Blackjack.
1. Noun: Guy 1, "I gave Sally a Reverse 69 last night."
Guy 2, "Cool. Did you give her a blackjack as well?"

2. Verb: Girl, "Let's Reverse 69 tonight!"
Guy, "Okay, but let me drink some laxative first."
Girl, "Why?"
Guy, "No reason."
by Captain Hot Pocket October 25, 2008
 
1.
1. Noun: The act of two people performing oral sex to each other at the same time, in which the man is on top, performing cunnilingus, and lowers his penis down into the mouth of the woman.
2. Verb: To perform oral sex at the same time, but with the man on top and the woman on the bottom. Sometimes accompanied by a Blackjack.
1. Noun: Guy 1, "I gave Sally a Reverse 69 last night."
Guy 2, "Cool. Did you give her a blackjack as well?"

2. Verb: Girl, "Let's Reverse 69 tonight!"
Guy, "Okay, but let me drink some laxative first."
Girl, "Why?"
Guy, "No reason."
by Captain Hot Pocket December 19, 2008
 
3.
A sexual act wherein two people place their mouths on each other's mouths. One partner stimulates the other's mouth while the other simultaneously does the same.

So named because it is the opposite of the less common 69.
"Hey dude, did you end up 69ing that chick?"

"No dude, just reverse 69, she was kind of a prude"
by Josh Hug August 01, 2009