Mine do derp a lot more often than I get pictures of...but here's what I've got:
Probably as close to derp as Ares gets...he's way too proud to get caught in derpitude.
Note the Tyr derp behind the mali tail.
*sigh* Morgan can do some amazing derp...sadly this is the closest we have a picture of.
And two Nyx derps...rare for her to get the most pics in a post by me...I do think she'd be flattered by the reason for it...