DIERKS BENTLEY spent his early days on the road raising all kinds of hell.  And then time caught up with him.   He told "Country Weekly", quote, "There were times when I was touring with CROSS CANADIAN RAGWEED . . . there were shows that ended poorly, I'm sure.  "When you have 10 or 11 Jager Bombs during your show, it's probably not going to end gracefully."  Dierks may have slowed down, but he's still partaking.  He adds, quote, "The smart thing is for me to stick to light beer."   This may or may not be related to Dierks' more grownup stage presence.  A woman recently tossed him a pair of granny panties while he was on stage.