I've heard and read a few times the saying of it's never too late - to jump into The Liffey. I somehow understand it as a way to see the bright side of things. The saying works well when everything seems to be too dark and it seems that there is no way out. There is always the Liffey.
During summertime it's actually a nobrainer if you're offered 50 euro for jumping in The Liffey. That's what happens in this video. The guys are next to The pint, nice two-storied pub in the central (with bands playing punk and metal upstairs - at least when I happen to be there). The jumping place is close to Tara Street station, and it's a good place to jump as the ladder is very close.