A friend or acquaintance you would be willing to bring to your home, mi casa su casa, to an extent.
Wsup homeboy, wsup homie, how are ya homie, etc.
This term has many connotations but is usually used illicitly.
"Let's go fishing..."
Many forms of enticement or entrapment, here are a few examples among many.
"Fishing for Cigarettes"
"Fishing for Alcohol"
"Fishing for Clients"
"ey foo, let's go fishing..."
"heyyy girl, let's go fishing..."