Piquero refers to a headfirst dive, often into water, but here it's used in a more dramatic and metaphorical sense.
In the song, the lyric "piquero a la línea del tren" (a dive to the train tracks) paints a vivid and somewhat shocking image of someone impulsively throwing themselves towards danger. It's a less common word than 'saltar' (to jump) and carries a stronger sense of deliberate, headfirst action, making it particularly impactful in this context.
Los Tres's "Hojas De Té" [Tea Leaves] throws us into a world of frustration and a desire to escape. The singer questions the usefulness of simple things like tea leaves, wondering if they can help him achieve what he wants. He's feeling lost and confused, asking "¿Tenías o no?" [Did you have it or not?].
There's a sense of deep dissatisfaction, with lines like "Cesante otra vez / Aburrimiento sin fin" [Unemployed again / Endless boredom]. He even declares, "Prefiero morir en la carcel que seguir vivo aquí" [I'd rather die in jail than stay alive here]. The song then shifts to a powerful, almost desperate mantra: "Los recuerdos harán que te olvide / Qué no se te olvide acordarte que me tienes que olvidar" [Memories will make me forget you / Don't forget to remember that you have to forget me]. It's a blunt, almost contradictory instruction to let go. The song ends with a dark image of jumping onto train tracks, a desperate attempt to escape his reality, only to find himself "A salvo, molido y consciente, no lo quiero creer" [Safe, crushed and conscious, I don't want to believe it]. It's a wild ride through someone's breaking point!