In a game a very close tie. A hard fought game that ends in a tie.
The Redskins and the Rams had an up-down game and it ended 27-27 in a real sister-kisser!
by Anothe Radult September 10, 2007
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A woman who is bi sexual, and kisses her twin sister.
Jess Origliasso, from The Veronicas, kisses her twin sister Lisa Origliasso.

You see her at a concert and you yell.

"Sister kisser!"
by Jessbian November 5, 2007
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A Six Fingered Sister Kisser is someone from an area/town/village reputed to have high incidence of incestual activities. Like the village in Deliverance.
I don’t suppose Lockdown will bother anyone in Wiltshire given that the gene pool is shallower than a municipal pool foot bath, they’re all a bunch of Six Fingered Sister Kissers
by Careless Winsper December 21, 2020
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