A sexual act, a variation of a DP (double penetration) involving two men and a woman, in which one of the men and the woman engage in mutual oral stimulation in the '69' position, while the other man enters the vagina that is being orally, um, eaten.
Vonda was on top of Gary sixty'nining like crazy when Indy entered her from behind. Gary kept sucking her clit as he saw Indy's erection, right in front of his face, pennetrating his wife, first her vagina, and then up her ass, that they had earlier opened with their mutually lubricating fingers. They kept vondafying till it was creme pie time!
by IndyMojaveDesert October 12, 2008
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