The rain was pouring down. 
There standing in front of a big puddle outside the pub was an old Irishman, drenched, holding a stick, with a piece of string dangling in the water.
A passer-by stopped and asked, "What are you doing?" 
"Fishing" replied the old man. 
Feeling sorry for the old man, the gent says, "Come in out of the rain and have a drink with me." 
In the warmth of the pub, as they sip their whiskies, the gentleman, being a bit of a smart ass, cannot resist asking, "So how many have you caught today?" 
Without so much as looking up from his drink, the old man says...
"You're the eighth",