or: drinkin' and shrinkin'
This is a definition for all the fellas out there who already knowamsayin, and also for the fellas out there who don't! (And partially for all y'all ladies who know and don't know); it's got factual bases behind it.
noun: It's the state of being sexually limpid at the time of typical arousal due to an abundance or excessive quantity of consumed alcohol. i.e. the drink 'n shrink roughly translates in conservative contemporary parlance as "getting drunk and having trouble getting hard"