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1.
669
the act of prefroming 69 with another partner who does the second "6" in the butt. here is the order is the of the numbers in gender, 6=male 6=female 9=male
hey i just 669 that milf with her bf
by w6i6l9l February 03, 2009
 
2.
669
A sexual position involving three adults.

The position can be obtained by three males, one male and two females, or two males and one female.

The first "6" must always be a male. He will insert his penis into the ass of the person in front of him, or the second "6". The second "6" will be performing a "69" with the last sexual partner.
Girl: Tim invited his friend Tommy over last Friday, and we 669'd all night long.
by Wolffie May 24, 2012