a guy who goes after fat chic i.e. harpooning a whale

also, it can mean a poker player who goes after easy money from a rich player (who is called a whale)

Someone who is possessed by clout chasing. The original human is now gone and a demonic entity that feeds on clout is all that is left. An empty shell with no control of their actions, forced to blindly react to situations they think will bring them attention.

When you surgically get your penis removed and get it replaced with a barbed harpoon, Then engage in a sexual activity with a girl/guy for them only to get extremely cut by your harpoon cock.