adj. Capable of inserting one's head in one's own rectum.
Did you hear management's latest plan? They must be the most flexible people on the planet.
Predominantly of one sexual orientation, but doesn't "draw lines in sand."
When talking about RPG creation software, if a game creator is "flexible", you're going have to code a lot to make a halfway decent game. It's pretty much a euphemism.
Typically, "flexible" RPG creators usually come with crappy default systems, encouraging you to code your own. It sounds easy until it turns out the software doesn't even come with any commands to gain access to the software's enemies and items, meaning you'd have to code THEM too. It's almost the same as coding your own game from scratch.
A good example of "flexible" RPG creation software is RPG Toolkit.
suckin ones own dong
peter ottoviano can shod (suck his own dong)
"Prince is very... flexible, so I've heard"
a bum girl dat you wud flex
or get off with
"yo check dat peng thing shez flexible"