Rock is rock, and, rock and roll, rock is just short for rock and roll.
Time to toss the dice
You may have heard the saying, 'When you're in love, smoke gets in your eyes.' Well when you're talking, smoke gets in your eyes and ears. Once you're on a roll, it's very easy to not notice that you've worn out your welcome.
If I get on a roll then I will steamroll people.
I can't narrow either one down to just one thing. I've rolled the dice and had both success and failure. I can tell you that right now we're on a roll with the talk show. Everything is good with the TV show.
These days, rock 'n' roll is much more about rock than about roll. I don't do rock. But I'm interested in that roll part, because that's the funny little bit that makes it hip.
Beware of being the roller / When there's nothing left to roll
Roll one then I will light it. Order one and I will buy it.