Ice-T Posts Topless Selfie -- I'm Still Jacked at 55

Following Geraldo Rivera's lead, Ice-T just posted a topless selfie on Twitter to prove he's still pretty jacked ... for a 55-year-old.

Along with the pic, the "Law & Order: SVU" star included the caption, "This morning: MFs popin sh*t ... 55yrs old. 'Don't sleep on the old cats.'"

Unlike Geraldo, T had the decency to wear pants. But, dude, what up with the blur?