Irish week
The length of time it takes for a person or group of people to drink a bottle of whisky.
Les: Dude, how long will it take for you to get over this breakup?
Wes: An Irish week.
Les: How long's that?
Wes: Probably later tonight.
Wes: An Irish week.
Les: How long's that?
Wes: Probably later tonight.