Fairly chill

Someone who is, in fact, not at all chill.

"Yeah, you've met Charlie, right? He's fairly chill. There was just that one time when he tried to bite that guy, but otherwise he's cool."

Development opportunity

A responsibility or task that absolutely noone wants.

Boss: So who wants to take minutes for this two hour meeting every Friday lunchtime where we spout bullshit about stuff that nobody really cares about?
Employees: ...
Boss: But it's a DEVELOPMENT OPPORTUNITY :)