The act that can lead to one having a horseshoe stuck up their anus, thus making them extremely lucky.
My friend Sam always does well in sports gambling groups because he is really good at playing anal horseshoes.
A game that likely results in a person having a horseshoe up their ass, giving them extremely good fortune at the amazement of those around them.
My friend Sam always does extremely well at Pick'em as a result of him being a great anal horseshoes player.