Deshidrato literally means "I dehydrate." It's an interesting and somewhat unusual word to find in a reggaeton song, making it memorable.
In the context of the song, Darell uses it in a highly suggestive and explicit way. He sings, "De tanto venirte yo te deshidrato," implying that he will make his partner climax so many times that she will become dehydrated. This provocative use of the word gives it a unique and enticing double meaning within the song's lyrics.
"Deshidrato" is Darell's confident, explicit take on chasing someone who keeps stringing him along. He opens by calling out a partner who claims to want someone else who doesn't even value her, while he's the one waiting on her call all day. From there the song turns into a boastful, sexually explicit come-on: he promises to outdo her past partner and leave her thinking only of him. The tone stays playful and possessive throughout, mixing jealousy ("if that guy touches you, I swear I'll kill him") with over-the-top bravado about his own charm and stamina. It's a lighthearted reggaeton brag track more than a serious declaration of feelings — the hook keeps circling back to the same complaint: she's with someone who doesn't appreciate her, so why not him instead.