Postre literally translates to "dessert". It's a common word, but its use in this song is quite provocative and memorable.
Myke Towers uses "me la comí de postre" which literally means "I ate her for dessert." This phrase is a suggestive double entendre, implying a passionate encounter where the person was enjoyed as the ultimate indulgence after the main event. It's a playful and enticing way to describe a romantic liaison.
"Postre" is Myke Towers reminiscing about one unforgettable night with a woman, using dessert as a playful stand-in for something much more intimate. The chorus keeps circling back to that night: it started with a drive in the car and turned into a memory he wants to relive.
Between the choruses, he lingers on what draws him to her: her look, her confidence, the fact that she isn't chasing his money. He admits he'd been watching her for a while before anything happened, and the second half of the song leans further into that longing, wishing he could have her again.
It's a flirtatious, explicit reggaeton track built around one central image, repeated until it becomes the song's whole hook.