How Old Is Too Old To Start Rapping? [NSFW]

So, once again while I was perusing the internets I came across this interesting, yet disturbing, video on WorldStarHipHop...

Check Out 60 Year-Old Unc Imo and the video for his song "Bad Muhfuggah."

Unc Imo is just begining his Gangsta Rap Career (#BBMSideEyeFace). I'll hold my personal opinion on this, but what I wanna know is this:

Is 60 Too Old To Begin a Rap Career?