I wear thongs just about ever day for the past 2yrs...really since getting out of college and having a guy i was dating at the time got me into them. At work i think they're fine, a bit distracting at times given that I have mostly bulge thongs (JS bulge or Jovana 3D etc) and they fit snugly all around. If i really have a lot of work to get done i won't wear them but the rest of the time they actually are a pleasant distraction. I'm never concerned about people finding out - true someone could pull my scrubs down but who does that? I've never seen a co-workers underwear outside of the odd panty/brief line and a patient came in with very tight pants on and I could see the outline of her thong (kinda hot!). So all in all, I'm a fan of thongs at work....