I went to Dublin for a weekend last year and drank nothing but Guinness for 2 days straight. We got there on Friday night, drank guinness til we fell over, then got up the next morning/early afternoon, had breakfast, and headed straight to the nearest bar for more of the black stuff. (Where we stayed til sunday morning)
That Sunday, I sat on the toilet more times than I had in the previous month. And my s--t was jet black. And you shouldn't start sentances with the word "and".