Jennifer Lopez paid Jimmy Fallon  a visit last night promoting her new show “Shades of Blue” on NBC. Things always get interesting any time a celebrity stops by “The Tonight Show” and last night wasn’t any different. The singer and Fallon dressed like teenaged versions of themselves for a skit called “Ew.” Lopez starts off the skit a little bummed out that her father made a SnapChat but the most hilarious part comes when Fallon cues Rihanna’s “Work” and Lopez starts some serious twerking only to be interrupted by Fallon’s step-dad who obnoxiously yells his version of  The Macarena. Check out J-Lo’s moves in the clip above.