SLASH got his star on the Hollywood Walk of Fame yesterday, and CHARLIE SHEEN made a crack about AXL ROSE while speaking at the ceremony.

He said, "It's quite fitting that Slash is getting a star on the very street Axl Rose will one day be sleeping on." 

You can see the video here or at OnTheRedCarpet.com.  He launches into the joke at the 1:22 mark.