A girl goes up to her father one night and says, "Dad, can I have the car tonight?"
Her father looks at her thoughtfully and says, "Sure, if you give me a blowjob."
So the girl puts his penis in her mouth and almost immediately spits it back out.
"Your penis tastes like shit!" she cries.
"Oh yeah," her father replied, "I forgot I loaned the car to your brother tonight."