Green’s Dictionary of Slang

1. (N.Z.) to nag, to pester.

1988		McGill Dict. of Kiwi Sl. 71/1: mad-dogging to pester; eg ‘Don’t mad-dog me, boy, can’t you see I’m concentrating.’.
2003		McGill Reed Dict. of N.Z. Sl. [as cit. 1988].

2. (US black/prison) to stare at intensely and threateningly.

1991		L. Bing Do or Die (1992) 5: You weren’t allowed to look at anybody in ‘a challenging manner.’ [...] Why the hell didn’t he just say not to mad-dog somebody?
1993		Snoop Doggy Dogg ‘Murder was the Case’ 🎵 Mad doggin niggaz cuz I dont care.
2001		(con. 1975–6) E. Little Steel Toes 13: The white kids laugh at us [...] and the black kids are mad-dogging us.
2004		Mad mag. June 39: They are totally mad-dogging you, dude.
2019		C.D. Rosales Word Is Bone [ebook] The dude in the RV next to us mad dogged her.
2020		Twitter 7 June 🌐 Man being arrested for ‘Mad Dogging’ an officer! This needs to STOP.

3. (US campus) to attack verbally.

1997–2000

Da Bomb 🌐 19: Mad dogging: 1. Seriously attacking. What’s that guy’s problem? He’s mad dogging me.