BJ and BS

Brake Job and Boob Squeeze.
When you are someone's car person and help them with all their basic vehicle maintenance, nothing is ever for free.

Person: Oh man, I failed safety inspection this year because they said my breaks are worn out. I need help.

Their car person: Don't worry, I'll swing by later for BJ and BS. I'll be done before your husband gets home this time.

Person: That would be great! I wish my husband knew his way around a garage.