Definition of dick rider in English:

dick rider

Pronunciation /ˈdɪk rʌɪdə/

noun

slang US
  • Chiefly in the context of hip-hop or rap music: a person who praises, adopts, or imitates the views, style, behaviour, etc., of another person or group, typically to an overzealous or sycophantic extent.

Origin

1990s; earliest use found in Usenet (newsgroups). From dick + rider.