One night a guy took his girlfriend home.
As they were about to wish each other goodnight at the front door,
he leaned with his hand against the wall and smiling,
he said to her "Honey, would you give me a kiss?"  
Horrified, she replied, "Are you mad? My parents will see us!"

"Oh come on! Who's gonna see us at this hour?" He asked grinning at her.

"No, please. Can you imagine if we get caught?"

"Oh come on! There's nobody around, they're all sleeping!".

"No way. It's just too risky!"

"Oh please, please, I love you so much?!?"

"No, no, and no. I love you too, but I just can't!".

"Oh yes you can. Please?"............ ........

"No, no. I just can' t" "I'm begging you ... "

Out of the blue, the light on the stairs went on,
and the girl's older sister showed up in her pajamas,
hair disheveled, and in a sleepy irritated voice she said,

"Dad says to go ahead and give him a kiss, or I can do it.
Or if need be, mom says she can come down herself and do it,
but for God's sake and all our sakes....

"TELL HIM TO TAKE HIS HAND OFF THE DOOR BELL!!"