Canaan was the father of Sidon his firstborn, and of the Hittites, Jebusites, Amorites, Girgashites, Hivites, Arkites, Sinites, Arvadites, Zemarites and Hamathites.
Later the Canaanite clans scattered and the borders of Canaan reached from Sidon toward Gerar as far as Gaza, and then toward Sodom, Gomorrah, Admah and Zeboyim, as far as Lasha.
Genesis 10:15-19 (NIV)
Any reader with even the tiniest exposure to Bible stories should read these names and say, “oooh.”
God seems to execute on the curse by wiping these people out later in the story.
What does it mean to curse? It seems like the generations that Noah cursed become a threat to his favorite and blessed son Shem.
Perhaps those we curse become a curse to us.