The overprotective person in a group of friends/family.
Halle: I can't wait to get drunk tonight!
Keith: No way in fuckin' hell bitch.
Halle: You're such a fucking mamahawk
Keith: What the fuck...
Tony: Dude I'm going to get so fucking high.
Bill: Don't you have work in an hour...
Tony: Yeah, so?
Bill: Maybe you should do it after work.
Tony: YOU'RE SUCH A FUCKING MAMAHAWK