MOM
The tattooist was on crack at the time.....
Actually, according to jjmacwow in post 101, above, the tattoo is an image of Our Lady of Guadaloupe, and if you look closely at the image from the cover of Rolling Stone, link kindly furnished by coexerj145, you can sort of make her out, gazing downward at his left hand and surrounded by... I guess it's a wreath or something.
Anyway, okay.... problem solved - thank you all!