Top definition
A sex position in which two females lick or suck each others tits at the same time. Similar to the sex position sixty nine
Hey dude, I was watching some great lesbian porn last night. These two super hot bitches were doing the Titty-Nine
by thetittyniner August 17, 2015
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Jul 15 Word of the Day
The safeguarding of Earth and other worlds from biological cross-contamination (i.e. billionaires with too much time on their hands).

Also known as “planetary protection.” Planetary protection / quarantine “reflects both the unknown nature of the space environment and the desire of the scientific community to preserve the pristine nature of celestial bodies until they can be studied in detail.”

There are two types of interplanetary contamination. Forward contamination is the transfer of viable organisms from Earth to another celestial body. Back contamination is the transfer of extraterrestrial organisms, if such exist, back to the Earth's biosphere.
Billionaires are having a dick swinging space race while the earth experiences record breaking heatwaves that cause sea creatures to literally cook inside their shells. We need planetary quarantine.
by monkeylabor July 14, 2021
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2
When two women suck on each others breast in a 69 style position
Velma was laying on the bed, shirtless so leaned down and stuck my tit in her mouth and clamped my mouth down on hers, tittynine style.
by afkap November 29, 2016
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3
When two well-endowed males titty fuck each other in the 69 position.
Hey Bud, flop those big hairy man-tits on my dong and i'll do the same titty-nine style, then we'll go to White Castle.
by Charles Dildo July 08, 2011
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