Zángano literally translates to "drone," referring to a male bee. It's a fascinating and somewhat uncommon word to find in song lyrics.
In "Abeja Blanca," the singer uses zángano to insult his ex-lover, who he compares to a "white bee." By telling her to "quédate con tu zángano" (stay with your drone), he's implying that her new partner is lazy, useless, and only serves to reproduce, much like a male bee in a hive. This clever use of a specific bee-related term adds a unique layer of scorn and imagery to the song.
Elvis Crespo builds a whole breakup out of one image: the woman who left him is a bee, and the hive has had enough of her. She is already demoted by the second line, "ya no eres reina, eres obrera" (you're no longer a queen, you're a worker), and the accusation never once steps outside the metaphor: "Mi vida arrancas cuando picas otra piel" (you rip my life out when you sting someone else's skin). What gets to him is the front she keeps up, "Te pintas de santa, pero en tus alas hay pecado" (you paint yourself a saint, but there's sin in your wings).
The comebacks are small and modern rather than tearful. He clears her off his phone, "Te borré, te borré como aplicación" (I deleted you, I deleted you like an app), points out that she spent her one weapon, "Picaste y te quedaste sin aguijón" (you stung and were left without a stinger), and hands the other man over without a fight: "Quédate con tu zángano" (stay with your drone, which in Spanish is also what you call a freeloader). By the last chorus she has been given a consolation prize, "Te ganaste la medalla" (you won the medal), "De participación" (for taking part), and he settles on the only arrangement he is willing to accept: "Ay, yo te quiero pero de lejitos" (oh, I love you, but from a good way off). That participation medal is the funniest line on the record.