Whereas offices have CasualFriday's, Gikopoi has Shirtless Saturdays.
If it's Saturday in your region and you choose to CamUp, you MUST stream shirtless, or else you will be regarded as a GikoPoseur.
Simply attending a shirtless saturday is not enough to score points as a GikoChallenge for men -- but it can qualify GikoWomen for a TitsReveal challenge accomplished.