How do YOU use a pepper grinder?

[Betty]

Perhaps it seems like an obvious question. But how do YOU use a pepper grinder? Do you turn it all the way around or do you swish it back and forth?

I'd always thought it was round and round - but I've seen several chef's on food network going back and forth with it.

So please, answer one of the great questions of the universe - round and round or back and forth?