Met colleague at work

Him: You programmers don't like sleeping at all. You should try to sleep and look fresh like me ... Blah blah blah... (You get the picture)

Me: *just smiles and watch him go*

(But what I really wanted to say)

Me: 'Well you know what, most programmers don't sleep much not because sleep deprivation is fun or we're in some kind of cult where it's some daily ritual. But when they need to send in an update; usually on a feature to make YOUR life easier OR just can't seem get their code to run right, and they keep telling themselves; "5 more minutes", "I have a good feeling about this modification" the minutes add up and before you realize it morning! And that's why some of us look like s*** in the morning'

(And then turn around to leave only to come back really quick like I just remembered something)

Me (again): "And don't think that we enjoy it. At least the ones I know don't. It's simply a fr****** work hazard!"