Secret Stash of Naughties

Leo often sets his clothes on fire by mistake. Either standing too close to the forge while he's working or during battles with monsters. This either aides him by distracting them or gets him brutally fucked by them.

His powers also go off by accident when Jason kisses him in public without warning because he gets all flustard. Leaving him naked with an awkward boner and Jason having to fly him back to Bunker 9 to get dressed... After a bit of sky sex first.

Pretty much everyone has seen Leo naked in camp so no one bats an eye. They just let Leo know he will be gropped until he puts on pants.

Festus also won't let Leo near him unless he's naked as a sign of dominance as Leo is his mate.

Jason can't go one day without ripping his shirt. His pecs are just too big and they just tear the collar of any shirt he's wearing, flustering Leo resulting in him burning his clothes off.

Frank similar to Jason struggles wearing anything but sweat pants. His cock which was already big got doubled in length and thickness thanks to Mars' boon. Now he can't wear jeans without his massive cock splitting the zipper wide open. Which again Leo sees and his clothes burn off.

It is known Percy can't get wet. What's not known is Percy's clothes get dissolved in water leaving him naked. He doesn't know why it happens but he'll fall in a lake and suddenly he'll immegerge dry but naked and hard. His clothes appearing folded close by, he just has to find them before he's seen. He's ended up on the news several times this way.

Rachel Elizabeth Dare has her future sight that manifests in her art. She doesn't do it consciously but often she will depicted a demigods fate at the hands of a monster, stripped naked, fucked and devoured. She hides these paintings away as she knows once they are seen they will come true.

Hermes Cabin are very skilled thieves and can steal the clothes off a man's back mid conversation. This is why Charles Beckendorf carried a taser at all times whenever the Stolles were around.