What does this mean?

My best guess is that the character got urine on the bottom of his shirt after using the restroom. Sometimes you would need to “tap” or shake out the last few drops after you finish, and the character seems to have tucked in his shirt before doing that, hence the stain. But actual answer aside, this seems to be a terrible novel to read if you’re trying to learn the English language. There’s so many rules being broken here. You need to have a mastery over the “proper” way things are written before you can start breaking the rules.

This is not a book for language learners. I don't mean any sort of gate-keepy thing here (and you're doing well so far, you are awesome!), but there are books that are heavy with slang, regional dialects, historical lexicon... and I wouldn't recommend any language learner such type of book. It's for kids who grow up with kid-issues and kid slang. If you're 17 and you've been studying English most of your life, and you spend most of your language learning time online, I guess this could be for you.

Wow, some of these other commenters are either eleven years old or incredibly prudish. The narrator is worried he got a little urine on the hem of his shirt from tucking it in too quickly before making sure his penis was fully urine-free. As far as I know, this isn’t a well-known phrase.

My guess: He's afraid he *tucked* his shirt into his pants before *tapping* his penis to shake the urine off, hence leaving a stain. I think most people would say "shake" for this action, but "tuck and "tap" are alliterative.

This book reads like and average Reddit post, never seen anything like it.

Hi everyone, I'd just like to add that I'm not trying to learn English with this book, I just couldn't find the meaning of this one sentence anywhere. I've already read many books in English and I usually don't have a problem with slangs. The book is Will Grayson, Will Grayson by John Green. Yes, the lowercase is annoying and seems kinda cringe, but it's the author's choice.

I have some questions 😭 1) What book is this? 2) Why does the author hate capital letters? 3) Is the whole thing as boring as this page about t-shirts?

No matter how you shake and dance, the last drop will fall in your pants.

Hmm could mean the whole pee thing or tucking in their junk and taping it down like my trans and drag friends do when they want to wear a panty.

It's about pee. The author is suggesting that the stain may be a pee stain. If you are not the owner of a penis, it may be hard to understand.

what the hell are belly pubes

WHERE ARE THE CAPS!

He took 4 seconds on a 6 second piss /S But seriously, he put his penis away without doing the iconic shake to get excess pee off, he spilled some urine on himself

What are you reading lolol

This is really badly written. Not just the phrase you were asking about. If you want to practice how to read text messages, this story is a good choice of material.

No idea but the grammar used here hurts

Why is there no capitalization?

It sounds like it means he tucked in his shirt before shaking off his penis after urinating, leaving a small urine stain at the bottom of his shirt. This is not a common expression as far as I know.

Y'all, the passage is *supposed* to feel anxious and rambly and all over the place. That's why there's run on sentences and lack of punctuation, it gives the feel that he's talking/thinking too fast and forgetting to breathe. truly great authors won't just follow the rules, they'll be able to give impressions through their writing beyond just word connotation or phrasing. And that often means using punctuation differently or not capitalizing words when the story is told by a teenager who doesn't capitalize in their writing.

I had to read the whole page for the context. but there is a yellow/orangeish color stain at the bottom of his shirt that he is hoping is juice, but I'm guessing he is suggestion it is pee or cum cause it sounds sexual and some people tuck their shirts into their pants, which means their penis can touch their shirts (if they do it wrong) what a strange book this is.

Whatever book that you're reading is horribly punctuated. The author isn't even capitalizing "I."

The fuck are you reading? None of that is written right. It's a sex thing. The author seems to be acting out some kind of pedophilic fetish with his characters.