Xzibit -- I Didn't Pimp My Taxes!

Yo dawg, Xzibit didn't pay all his taxes in 2011 ... so the federal government issued him a tax lien ... TMZ has learned.

According to a lien filed with the Los Angeles County Recorder's Office, the former "Pimp My Ride" host still owes Uncle Sam back taxes for the year 2011 to the tune of $130,696.65.

But Xzibit is no stranger to tax problems -- he has reportedly filed for bankruptcy twice since 2009 and ran up a tax bill of nearly one million dollars.

Can we get this guy some rides to pimp?