Celebrity tattoos -- When a celebrity has lost touch with reality, there are signs.

Sometimes it's getting behind the wheel after too many drinks and not enough panties. Sometimes it's agreeing to co-star with Kevin Costner, assured that this flick is definitely the comeback. Yet with the folks we've gathered here, the inability to gauge right from wrong is as plain as the ink on their face, or thigh or navel.

Behold Ashlee Simpson, who recently tattooed an enormous permanent corsage on her wrist.

She didn't even make our countdown of the 20 Worst Celebrity Tattoos Ever.

Who did we miss? Let us know.

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Worst Celebrity Tattoos

20. We hate to pick on someone as beautiful as Megan Fox, but what's up with the Marilyn Monroe face on your forearm? We like Peyton Manning but you don't see us inking his mug on our left cheek, do you? (Photos by Getty Images).

Worst Celebrity Tattoos

19. Steve-O: You have to be extremely committed to a joke to have a larger-than-life tattoo of your own face. (Photo by Peta.org).

Worst Celebrity Tattoos

18. Yes, that is a barcode on the back of singer Pink's neck, supposedly from one of her albums. Run her over a scanner and "$1.98 bargain bin special" pops up. (Photo by AP.)

Worst Celebrity Tattoos

17. Travis Barker: sponsored in part by Cadillac. GM should pay him royalties to play shirtless on all Plus 44 tours. (Photo by Getty Images).

Worst Celebrity Tattoos

16. Poor Amy Winehouse. In addition to abusing the inside of her body with various substances she has abused her skin with crappy tats. Check out the shirt pocket with "Blake's" above it (in honor of her husband). A nice idea, except she lookslikesomeone who pumps gas at Blake's Corner Chevron. (Photo by Getty Images.)

Worst Celebrity Tattoos

15."Know Your Rights" -- words of wisdom from Angelina Jolie's back. What, she never heard of bumper stickers? (Photos by AP).

Worst Celebrity Tattoos

14. Bam Margera: We're not sure what's creepier: the bizarro tat of his Uncle Vito that Bam had done on his calf, or the fact that Vito was convicted of sexual assault on a child. If we're Bam, we're having that thing burned off like, yesterday. (Photos by Getty, AP, & Kambouris/WireImage).

Worst Celebrity Tattoos

13. Mark Wahlberg: Why put your initials and last name in permanent ink on your shoulder? So you don't have to pull out the cig dangling from your mouth if someone asks who you are. Just pull down your shirt and show 'em without a word. Cool as ice.

Worst Celebrity Tattoos

12. "If I could turn back time," Cher must be thinking, "I'd stop myself from getting this winged ass tattoo." (Photo by AP).

Worst Celebrity Tattoos

11. Oooooh, look out everyone, Tommy Lee promises MAYHEM. Please, Tommy. You can give us danger, bedlam or tomfoolery. Anything but mayhem. (Photo by Getty Images.)

Worst Celebrity Tattoos