In a May-December relationship, a way to describe the younger partner, especially when the younger partner looks like it hasn't passed puberty yet. May be a warning that a statutory rape could happen.
52 year old Schizo Woman:I just got a boyfriend, he's kinda young.
Rosanne:How young? Is he milk money young?
52 year old Schizo Woman:He's 14.
Rosanne:How young? Is he milk money young?
52 year old Schizo Woman:He's 14.
by Wm. Wallace The Freedom Fighter March 4, 2008
Get the milk money youngmug. one who is the little wussy kid in school, whom always got their milk money stolen from them. Also used in reference to describe someone who is or was a lil pussy boy...
by KarenLess November 20, 2004
Get the milk money billymug.