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1.
The act of having intercourse with a woman more than six months pregnant.

Stipulations:
1)The unborn child must be of relation to you or a close acquaintance.

2)The unborn child can not be your child.
Hey ma, just had a red neck threesome with uncle Mike's wife.
by Conway Acres Trailer Park April 27, 2011
 
2.
The act of masturbating and licking ones armpit simultaneously.
Because his girlfriend would never go for it, Cletus had his own Redneck Threesome.
by SeeUPee August 15, 2012