Spin the bottle and Truth or Dare, not drinking games in and of themselves, but play them drunk and they become pretty fun. Then there's Drunken Dare, where you spin a bottle, ask the person who it lands on to choose truth or dare, the person then either has to do the dare or take a drink, or tell the truth or take a drink (with the truth part the group will act as judge and jury as to whether what the person said was actually the truth or not)
As for songs, well, if it's Irish you can generally use it as a drinking song, for no other reason than when you start a drinking song a lot of other people will join in, and Irish tunes are always nice when large numbers of people sing them together.
As for songs, well, if it's Irish you can generally use it as a drinking song, for no other reason than when you start a drinking song a lot of other people will join in, and Irish tunes are always nice when large numbers of people sing them together.