Curse to lose my armor with the biggest bonus

[six's monkey]

I choose to wonder why you were carrying the tattoos but not wearing them.
If, however, you weren't wearing them, you weren't wearing armor and so there's no armor being worn for you to discard, IMHO.
The exact wording of the specific curse matters, of course, as one might call for the loss of all armor in play (that is, not in your hand, but face-up on the table) and another might remove "the armor that gives the biggest bonus".
I, personally, would rule that a +0 bonus is no bonus and cannot be 'biggest', unless perhaps you -also- had in play an armor with "Cursed Thingie" or "Anti-matter" or somesuch attached, which caused that armor to have a negative 'bonus'.
All of this is in no way official. I'm terrible at holding my tongue, is all. :-)