Now they say Lindsay Lohan has a sex tape

It's been days -- days! -- since we wrote something unflattering about Lindsay Lohan, so thank goodness for the blog GossipRocks, which says there's a sex tape of LaLa floating around out there.

The proof? A grainy still from a cellphone camera making the rounds (way too X-rated to show here) that could be any blond with no self-respect. The site says former boyfriend Calum Best filmed the deeds on his phone and sent it to his friend. That's going way beyond kissing and telling in our book.

Apparently somebody who knows somebody says somebody emailed the pic to LoHo, who is spazzing because she "can't remember it being filmed." Of course she wouldn't: She and Best were an item about a year before she entered rehab, so we doubt there's much that could be remembered through that vodka fog.

[Photo: Getty Images]