Anal Glaucoma

I was having lunch at a local restaurant the other day when I overheard the following conversation:

Guy #1:  I'm trying to get some fishing in, but the weather has been sort of crappy.
Guy #2:  Yeah, I know.  It's supposed to rain on and off for the next few days.  The first good day predicted will be Monday.
Guy 1:  Really?  Then, I'll go to work for the rest of the week and call in with anal glaucoma on Monday.
Guy 2:  Say what?
Guy 1:  You've never heard of anal glaucoma?  That means I don't see my ass going in to work on Monday.

As Cindy Adams would say, only in New York, kids.  Only in New York.