Green’s Dictionary of Slang

1. (US black) not paying attention.

1993–2003		Fromdadirtysouth Urban Dict. 🌐 slippin Losing control. Slacking off. Losing your game. Making a mistake. Disrespecting a true playa. That nigga’s slippin. He better check himself before he wrecks himself.
1993–2003		Mr. Terrence L. Trezvant Urban Dict. 🌐 Slipping 1. on the downward trend. 2. losing the edge. 3. falling into error. 4. not paying attention.
2012		‘Dutch’ ? (Pronounced Que) [ebook] The D.E.A. had caught him, Blue and Rivera slipping — badly .
2018		Loski ‘Drill’ 🎵 Rambos twinning, on a late night trynna catch man slippin’ / Go home with my black blade drippin’.
2020		G. Krauze What They Was 37: Shank in my pocket at all times coz it’s not about slipping and you never when shit could pop off.

2. (UK black) being unarmed.

2016		Guardian G2 19 Feb. 9/1: The dangers of straying outside your estate and being caught ‘slipping’.
2017		Eve. Standard 4 July 9/5: ‘Social media has upped the stakes of being “caught slipping” [without a weapon] in another gang’s territory]’ .