Play video content EXCLUSIVE TMZ.com

RuPaul doesn't want the LGBTQ community to get down about the Supreme Court decision to let lower courts rule on transgender rights -- he has his own idea about how to keep the progress rolling.

We got Ru in NYC, hours after SCOTUS rejected the high-profile bathroom rights case of a Virginia high school student ... sending it back to the court of appeals. He took the news well, insisting the Justices are stuck in the 20th century.