Echar los lobos
Equivalent to the phrase echar los perros, it means to flirt with someone, hit on them, or make a move. (The expression is a variation of the common idiom echar los perros, which literally means to set the dogs on someone, used to describe pursuing someone romantically).
I am going to echar los lobos to the neighbor. That guy never gets tired of echarle los lobos to the girls.
Automatically translated from Spanish