10/23/2012 01:03 pm ET

Justin Bieber Sued: Man Claiming To Be Selena Gomez's Father Files Bizarre Lawsuit Against Singer

Justin Bieber bought himself a penis enlargement with a stolen credit card ... and he's also cheating on his GF with Ke$ha, Rihanna and Penelope Cruz ... this according to a CRAZY new lawsuit filed in court and obtained by TMZ.

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