greasy kid's stuff

greasy kid's stuff (uncountable)

1. (informal, derogatory) Greasy hair oil.
   • 1978, Bruce M. Nash, Whatever happened to blue suede shoes?, page 64:

     Try not to nick yourself or rub too much of that "greasy kid's stuff" in your hair as you comb through these hair teasers.

   • 2015, Carol Duracka, Sam, the Hot Dog Man:

     His scraggly hair was swathed in so much “greasy kid's stuff” it actually looked wet.

2. (informal, derogatory) Something puerile or not worth bothering with.
   • 1994, Newmedia, volume 4, page 50:

     Until recently, developers looked down on the games realm, viewing it as greasy kid's stuff — and most of it still is.

   • 1997, Katherine E. Kreuter, The Cloud 9 Affair, page 25:

     If Ginna and Morgan were into anything, I was thinking, it would be designer drugs. Something like China White. Certainly not any greasy kid's stuff.