Borondo is a cool and very specific Colombian slang word for going on a stroll, wandering around, or partying. You definitely won't find this one in a textbook!
In the song, Beéle sings that he hopes the girl makes him settle down "del borondo" (from the wandering/partying). He's saying he's ready to trade his carefree, party-boy lifestyle for her love, which is a pretty romantic and modern declaration.
Riding on a smooth reggaeton groove, Top Diesel is Beele’s playful confession that even the coolest guy can get blindsided by love: he struts in bragging about a top diesel, top de cara, top princess style, repeats his own warning “no te vayas a enamorar”, yet the moment he spots the hottest girl on the dance floor his resolve melts, his heart laughs, and the catchy no-no-no hook turns into proof that he truly cannot say no; through cheeky lines about meeting her mom, making a bedroom playlist, and relatives teasing that “love makes you gain weight,” Beele turns the tug-of-war between casual fun and sudden infatuation into a humorous, relatable anthem that reminds us how easily desire overrules good intentions.