Ray J: Scoot-E-Bike Was My Idea, Lawsuit's a Shakedown

Ray J's slamming the breaks on some dude suing him for stealing the idea behind Scoot-E-Bike ... calling the suit a pure money grab. Ray J's manager, David Weintraub, tells TMZ ... Scoot-E-Bike is 100% independently owned, financed, trademarked, marketed…