Suck a bag of dicks

I've heard of the expression suck a bag of dicks many times. And often wondered how can it be done, and why do people call me that when I cut in front of them in traffic.

Then I wondered. How should I find a bag of dicks, and how does one suck them? Individually? Or they come in a plastic bag, and you suck the bag? What does a bag of dicks look like and how does one suck them?

I'm not really experienced in sucking dicks, and have not done so, so I could not understand how to suck a bag of dicks.

And when someone asks me to go suck a bag of dicks, I ofter reply. "HOW?"

And then I saw this and tried them. Not bad actually.

Perhaps someday, you can too suck a bag of dicks.

-- Iron Bowl.