Megan Fox makes her boyfriends get a tattoo of her face.

The 'Transformers: Revenge of the Fallen' star loves body art, and insists prospective lovers have an inking before she will consider getting serious with them.

Megan - who recently reunited with her on/off boyfriend Brian Austin Green - also revealed she doesn't "understand" 'Transformers', even though she has starred in both films.

She explained to TV programme 'The Early Show': "I usually don't watch things that I do because I'm very neurotic about it and I can't sit through it. But I had to watch this one because everyone was saying 'Megan, it's really good, you have to watch it.'

"It's massive. I don't know how people can see it on IMAX without having a brain aneurism or at least a migraine headache. I'm in the movie and I read the script and I still don't know what's happening so I think if you haven't read the script and you see it and you understand it you are a genius."