One he thinks is from his aunt.

The next day, standing alone in the locker room, K-T still couldn't fathom how lucky he was. He had spent all of the last evening looking for his navy blue, school swimsuit to no avail. And wearing swim trunks would not only hamper him but showcase his lack of serious.

He had opened the shoebox that contained the various gifts from his aunt that were supposed to be underwear or swimsuit that he had resolved not to wear with his finger crossed. From things that were obviously bikini bottoms and g-string with no room in them to hope to contain his massive package. To hand-knit woolen swimsuit from one of his aunt hobby phases. To one that not only had a dick and balls shaped pouch that would totally expose the shape of his junk but was also made of sheer mesh. Or evennnormal looking ones but made of completely see through material. Everything in the box reminded why it had been banished in it.

And at the last minute he found something unexpected, for some reason the box also contained a pair of black speedoes in his size, with an intact pull string, no tear, stupid logo or other weird feature. He had absolutely no idea how it ended here, the only thing unusual with them was that the tags were gone, making it impossible to know what brand it was, but with brands making large itchy tags he frequently cut them on underwear for comfort.

He put them on and reveled in how normal they looked. His bulge was noticeable, impossible to do otherwise due to size, but it wasn't on full display and the fabric was thick enough to hide everything.

As he walked in the swimming area for the tryout he was blissfully ignorant of the fact that his sister Emily had hid those speedoes in the box months ago, trying to prank him before a pool party they had both been invited to. They looked the plainest to entice him to pick them, but K-T had been late and picked the first he found, attending the party in a g-string, his balls hanging out of it every other minute.

Emily had been disappointed, the thing had cost her a pretty bit online on a prank supply website. But she had since forgotten about it. She had hesitated for a while between the various models, her favorite were the dissolving ones that left the wearer naked if soaked and a model that would shrink and become clear, looking like no more than cling film once done.