Christ Bearer's Penis Works ... And He Wants To Prove It In Porn (VIDEO)

Christ Bearer -- the rapper who chopped off his own penis -- says his man junk is still fully functional and he wants to prove it ... by starring in a PORNO FILM!!

A very fired up Bearer was out in front his barber shop in Long Beach yesterday -- and told TMZ how his genitals recovered from the self-inflicted butchering back in April.

TMZ: Does it work?
Bearer: "Does it work?!? Can Chris Brown dance? Can Kanye West rant? Can Jay Z fight off a trick?"

The video is insane -- Bearer explains WHY he took a knife to his dong (hint: drugs) ... and makes his plea to Vivid to show off his member in an X-flick.

And get this ... Christ Bearer may get his porno wish -- we spoke to Vivid honcho Steve Hirsch who tells us he's definitely interested ... but wants to check out the goods before he makes an offer.