One day Jr. heard a noise & peeked in his folks room 2 see his mom bent over the bed & dad going at it behind her.

Jr.'s dad saw him & gave him a wink as Jr. shut the door. After they were done, Dad went to check on Jr.

He opened Jr door to find Grandma bent over the bed & Jr. going at it. What the hell are u doing Jr.?, Dad said.

Jr. replied, "it ain't so funny when its your mother is it!...........