The Brother and Sister Next Door (3)

Brad took off after her. She giggled and hid upstairs in mom and dads bedroom. Brad thought she was downstairs and search all around.
He heard a key in the front door.
It was mom, got off early and came in carrying groceries. There he was naked in the den. “Oh Shit“, he thought.
She lugged the sacks in the kitchen, and Brad made a mad dash for the stairs, just as mom came out of the kitchen. “Brad!, what are you doing???” she said.
Panic set in, there he was naked, his hands over a boner that wouldn’t go down, his mom blocking the stairwell, he didn’t know where Lisa was and mom wanting him to explain.
He held his boner down, as best he could and said: “I….I…a….was chasing a mouse!”
His mom covered her mouth and began to laugh, while staring at his boner. Finally she paused, and said: “Was it a GIRL mouse?” and started busting up at her own reply. “Ha Ha, mom made a funny, ha ha.” Brad said, and pushed by her and up the stairs he flew.
Now for Lisa, he didn’t know where she was, and he had to warn her. He yelled down, “Mom, how come your home early?” as she replied, he saw Lisa tip toeing out of their parents bedroom.
Brad whispered: “stay down, mom’s home!” She giggled and slipped in her room as Brad swatted her on the butt.