We're wondering what the real story is here.

Tommy Lee claims son Brandon assaulted him and left him with a bloody lip, but other sources claim the rocker and Pamela Anderson's son was defending himself during his father's drunken rampage.

"My fiancé and I were in bed when my son busted into the room and assaulted me. I asked him to leave the house and he knocked me unconscious. He ran away from the police. THAT’S the truth,” he tweeted after news broke.

The Motley Crue musician also shared a pic of his battered face, which he says was done at the hands of the 21-year-old.

“My heart is broken. You can give your kids everything they could ever want in their entire lives and they can still turn against you. Good job Brandon. Great son!” he captioned the photo.

Sources say Brandon was sticking up for his Baywatch mom, after Lee slammed her for a recent interview she did with Piers Morgan, in which she claimed he was an abuser during their relationship.

"Think she’d find something new to discuss instead of rehashing old s— but I guess she has nothing else going on & needs attention Signed, ‘The abuser’ (who she texts everyday & asks for me back),” Lee tweeted.

What a mess!