Britney Spears is a "Toxic" boss.

A former cop who worked for Spears claims the singer made his life a living hell -- sexually harassing him, doing drugs and failing to shower for days, according to a new report.

Fernando Flores, who worked as a bodyguard for the pop princess last year, has sued Spears' conservators for $10 million alleging a series of complaints, including sexual harassment.

Flores alleges that he faced a series of unwanted advances from the 29-year-old Britney, who "paraded naked in front of him and often beckoned him into her bedroom for sex," according to RadarOnline.com and Star magazine. 

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He also claims the pop superstar used drugs including methamphetamines and medicine used to treat heroin or morphine overdoses.

In the lawsuit, the former bodyguard claims Spears was a rude boss -- farting, picking her nose "unapologetically" and failed to shower for days.

"Spears was generally personally unkempt," according to the suit.

Lawyers for Spears have filed a motion saying the allegations are false.

Go to NYPost.com for the full report.