Looking at your old comment from '07, I suspect that Doug, as a professional soldier, would recognize the Twins using humor as a coping mechanism (which they do quite a bit of) as pretty standard for civilians/new recruits and acceptable, provided that they toned it back when the shooting starts (which they seem to do in Deathly Hallows, if only because the scenes they're in involve one of them getting badly wounded or dead).
Ebony the Black Dragon
http://ebony14.livejournal.com
"Good night, and may the Good Lord take a Viking to you."
Ebony the Black Dragon
http://ebony14.livejournal.com
"Good night, and may the Good Lord take a Viking to you."