The earliest recorded use is in Henry Wadsworth Longfellow's The Golden Legend (1851): “Don't cross the bridge till you come to it, is a proverb old and of excellent wit.” The actual origin has been elusive.  ( source ) The idiom's intended meaning is - you can't cross a bridge until you get to it so quit anticipating how to cross it long before it is visible.

This phrase was used to describe a Mexican border situation in 1919. Read about it here .  Modern day use of it means that what has been done is done and it can't be changed. Once water goes under the bridge it can't reverse course. 

Wear Something Gaudy Day What do *you* mean  gaudy ? I would say the most gaudy dresser of our time is probably Lady Gaga . Other nominations?  :) Mulligan Day A Mulligan is a second chance, a "do over." What would you like to do over? What would you like a second chance at? Today is the day to pursue that. Today you can make a Mulligan Stew . Traditionally, mulligan stew was an improvised dish prepared by hobos with whatever food they could get, but it has gradually come to represent a variation of Irish beef stew, often served as a St. Patrick's Day main dish. Here's some movies about second chances, a 1998 film and a 2013 TV Movie . Bridge Day   So apparently this day is really for the extreme sport of BASE jumping .  Which the thought of that makes me stomach hurt.  :) So because I am a wimp and nowhere close to a risk taker I'm going to focus on the actual bridge today. Bridges are amazing pieces of art constructed through modern...