She has five crotch-grabbing techniques.
Rihanna's risqué Super Bowl show! Singer grabs her crotch and butt before smelling her hand
Did Rihanna grab her crotch during the Super Bowl LVII halftime show?
Pictures - New York Magazine
Rihanna grabs crotch during Super Bowl halftime show – New York Post
NFL fans are only just spotting Rihanna's X-rated gesture during Super Bowl halftime show
Rihanna Super Bowl Halftime Show
Rihanna grabs her boobs and crotch at sexy Twickenham concert - Irish Mirror Online
Concerts - New York Magazine
Rihanna grabs her boobs and crotch at sexy Twickenham concert - Irish Mirror Online
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Rihanna at the Super Bowl: an analysis of society's reaction – The Observer
Rihanna Soars In Super Bowl Halftime Show; Reveals New Baby Bump - Review