Mr. Tea
Let's Talk About Ceps
I like that.Old story, but apparently in the scene with the lighter fluid they replaced the coloured water that they used in rehearsals with vinegar for the final shot without telling Grant, so his reaction to drinking it is actually genuine...
I also think it's pretty hard to convincingly act drunk when you're not, and R. E. G. does a really good job of it in that film, especially given that he's teetotal (although apparently the director did insist he go on a single epic drinking binge before filming started, to help him get into the role).