[identity profile] bunsen-h.livejournal.com 2013-07-05 04:23 am (UTC)(link)
Not to be confused with Redshirts, I suppose. Or have I missed the point of the joke?
Edited 2013-07-05 04:23 (UTC)

[identity profile] movingfinger.livejournal.com 2013-07-05 06:41 pm (UTC)(link)
A pinkshirt is a redshirt who does the laundry.

[identity profile] bunsen-h.livejournal.com 2013-07-05 07:57 pm (UTC)(link)
I was under the impression that a pinkshirt was a whiteshirt that had shared a laundry load with a redshirt.