Notes:

Artistic Rendering of this sequence.

In Fate/Extra CCC one of your opponents, Elizabeth Báthory, attempts to vamp the protagonist with the whole "sexually intimidating ojou-sama gimmick". If you have Saber, Archer of Caster with you a boss fight ensues. Gilgamesh on the other hand, who as per his myth can spot a virgin a mile off, nonchalantly blasts his clothing off and offers to "Show her the kings favor".

You can win Servant fights via Virgin Shaming, go figure…

Full translation of the scene here.

Funny story about this scene too. AUO Cast-Off was created for fun during scenario production, and the dev team had originally planned to use his swimsuit model to accomplish the task by focusing the camera on his upper torso and revealing only a bit of skin. It turned out Kunimitsu of the modeling team had, “off the clock, spontaneously”, made several models including a nude Gilgamesh model to Nasu's surprise.