But Brody said the officer told them, "I just had to check it out. You're O.K."
Motorists are enchanted with the children, and some have become regulars. A few have driven around the block and circled back around to buy lemonade.
One man parked on a side street and walked down the road to the driveway to tell the children that he was a successful businessman, who sold lemonade as a child.
Mark Brody remembers one familiar-looking fellow bought lemonade from Leo, and said, "Here's an extra buck, kid."
It was former Gov. Robert Ehrlich.
The family gives away lemonade to those who don't have a dollar handy, rather than trying to make change at the light. Four or five times a day, someone voluntarily hands money out their car window as late payment.
The family also gives free lemonade to motorists whose car breaks down or have an accident, to homeless people and to people who often sell roses at the intersection.
The family gave free lemonade to a busload of inmates in a prison work program, which didn't sit well with Leo.
"He was mad, because he could've sold a lot of lemonade," his dad said.
One time, Blanche tried to sell a cup of lemonade that was sitting out for awhile, but her dad took it back, saying, "It's not cold enough."
Robyn wishes they could sell lemonade northbound, too. When her parents visit, she tells them, "Take a grandkid and work the northbound route."
But they never take her up on it.
With the kids going back to school, the lemonade stand is coming to an end for the summer.
"The experience as a parent has been incredible," said their proud dad. He said that as a way to keep the kids active and entertained, the stand has been better than letting them look at Sponge Bob on TV — "no offense to Sponge Bob."
Will the family revive the stand next summer? He said he's leaving it up to the kids.
"It's not my call. They're going to have to do something."