You might imagine that celebrities would be pretty careful about where their sex tapes disappear to these days.

But it seems even the law can't help the randy stars when it comes to those ever-so-personal home videos.

He may have won a court injunction to stop his tape being sold, distributed or displayed back in 2005, but Irish actor Colin Farrell has fallen foul of a rather sneaky anonymous source.

The tape, featuring Colin enjoying a romp with Playboy model Nicole Narain, has reportedly been sent to the family of his current girlfriend Alicja Bachleda.

And since the couple have only recently welcomed baby son Henry into the world, we're guessing the timing's probably not that great.

A friend of Farrell told Bang Showbiz: "Colin hoped he'd seen the last of the tape. Him and Alicja are desperate to find out who sent it."

We can imagine.

The source added: "Alicja's parents in Poland met Colin and liked him a lot. But they are Catholic and very old fashioned."

Ouch... they've probably seen a whole different side of him now.

Colin may have managed to stop his home movie being shown, but celebrity sex tapes can work wonders in terms of raising your profile...