Haha! Weeeell as a girl who is commando the majority of the time....I ALWAYS wear underwear under my scrub pants! I can just imagine CPR....which btw is pretty brutal.....kneeling on the side of a bed, butt sticking out, doing compressions and riiip..... The seam rips right up the derrier! Exposed for all to see! No thanks, ALWAYS wear underwear under scrubs!