Alebresta comes from the word "liebre" (hare), and it means to get riled up, excited, or agitated, much like a hare that's startled or ready to run.
In the song, the lyrics say, "Conmigo se enfiesta, también se alebresta" (With me she parties, she also gets riled up). It's an interesting and less common word that vividly describes someone getting hyped up, especially in the context of a party or exciting situation, adding a unique flavor to the lyrics.
"Se Acelera" paints a vivid picture of a life filled with adrenaline, luxury, and danger. The song's narrator describes a fast-paced lifestyle, moving from poverty to wealth, a journey he celebrates by "going hard." He drives sports cars and a Mercedes, travels to places like Dubai and Greece, and spends stacks of cash so large the rubber bands snap. This life is shared with a woman who is just as wild, getting excited by the sound of his gun and the thrill of partying to corridos.
However, this extravagant life exists in the shadows. The narrator is always armed with a Glock that's "not a toy" and mentions being protected by a "godfather." He avoids photos because the government is after him, and he's always ready to escape on a private jet if things get too "hot." The lyrics blend the celebration of newfound wealth with the constant presence of illegal activities, from incoming "shipments" to being a fugitive, creating a classic narcocorrido narrative.