"It would be easier to do this in pure SQL than in PHP/Ruby/.NET/Node/Scala/J2EE/Whatever." (And vice-versa.)
Pizza is a vegetable. Because tomato sauce. Also, walking down the stairs to pay the delivery person counts as exercise.
"You know what would make this place more productive? A ping-pong/foosball/air-hockey table!"
90% feature-complete == 90% done.
"But I'm only changing one little thing..."
Faster hardware makes everything better.
"No worries--we'll document everything first thing after the release."
Caffeine is a suitable replacement for motivation.
"It works/looks just fine in Chrome, so I don't need to check it in Safari." (Also vice-versa.)
It is a truth universally acknowledged that a programmer writing Python in emacs must be a badass coder.
"Another 15 minutes of work and I can check this in and go home."
jQuery and Node make JavaScript a grown-up programming language. ;~P
"I can finish this over the weekend when there are no distractions."
- - - - -
* Shout-out to Dennis for a couple of ideas...and for confirming a few of mine. Because, apparently, we're both pastmasters of self-delusion. :~/