Can I have a blow job?

One night a guy takes his girlfriend home. As they are about to kiss each other goodnight at the front door, when the guy starts feeling a little horny.

With an air of confidence, he leans with his hand against the wall and smiling, he says to her, "Honey, would you give me a bj??

"Horrified, she replies, "Are you mad? My parents will see us!",
"Oh come on! Who's gonna see us at this hour?" he asks 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 goes on, and the girl's sister shows up in her pyjamas, hair dishevelled, and in a sleepy voice she says,

"Dad says to go ahead and give him a bj, or I can do it. Or if need be, mom will do it, or even dad.
But for God's sake tell him to take his f***ing hand off the intercom!"