A tourist to North Dakota was bragging to Ole Peterson about all of the things he’d seen.

“Why, Ole, I’ve been to the Grand Canyon!  It’s so big that if you stand at the edge and yell “Peterson” down into it, it takes 10 seconds for it to say “Peterson” back to you!”

Ole thought about that for a minute, and then said “Oh, dat’s nuttin! Ve got a lake up near Minot so big that if you stand on the edge and yell “Peterson”, it takes about 10 seconds for you to hear “Vich Peterson?” come back at you!”