Ke$ha may have distracted concertgoers at a recent Rihanna show in Australia by nearly fornicating with someone in the audience.

The 'Sleazy' singer was in Australia and decided to fly to Rihanna's Melbourne show on Tuesday to hook up -- literally -- with Scottish DJ Calvin Harris, who she supported during his 2009 U.K. tour. Harris, who is currently supporting Rihanna on her Last Girl on Earth tour, was joined by Ke$ha at the Rod Laver Arena Tuesday night. The two were spotted all over one another before they finally left the show early.