Fresita is the diminutive of fresa, which literally means strawberry, but in Mexican slang it describes a preppy, posh, or snobby person. With the -ita ending, it sounds cuter or more playful: “little preppy girl”.
In this song, fresita is used to describe a girl who looks sweet and innocent on the outside, but has a contrasting, more rebellious or “gangster” side. Learning this word helps you understand a very specific cultural slang that you won't find in beginner textbooks.
This song is a straight-up party anthem and a duet between two very confident people flirting. The title, "FRESITA," is a Mexican slang word for someone who is preppy or posh. Fuerza Regida starts by singing to a girl like this, noticing that her boyfriend gets mad because his music makes her want to dance reggaeton, or perrear. He's not subtle at all, saying he likes her "cara de diablita" [little devil face] and plans to take her home.
Then Bellakath comes in with her side of the story, and she's just as direct and powerful. She calls herself a "kitty OG" and says she likes his flashy style. She plays with her image, saying she has a "Cara de fresita, pero me gusta bien gangster" [A preppy face, but I like it really gangster]. The whole track is a playful back-and-forth about luxury, desire, and who's in control, with some incredibly blunt and funny lines about what they want from each other.