Yeah, I heard a guy. Say I call dibs on her, who was pointing at me.
They want a chance to date/romance/bang her first before their friends, but it doesn't really work that way
It means that's the girl they are interested in and their friends can't go near her.
Same kinda thing as if you call shot gun in a car. Same concept.
He gets first shot at her.
What do you mean first shot?
It means he’s afraid of Santa Claus…
That you get first shot at her.
you might be in a cafe and notice a girl you are interested in, your mates will also see her, you call dibs as having first chance to chat to her.